diff --git a/README.md b/README.md
index d385a56..ee502f2 100644
--- a/README.md
+++ b/README.md
@@ -4,52 +4,47 @@
 [![Docker Pulls](https://img.shields.io/docker/pulls/guessi/ssl-certs-checker.svg)](https://hub.docker.com/r/guessi/ssl-certs-checker/)
 [![Docker Automated](https://img.shields.io/docker/automated/guessi/ssl-certs-checker.svg)](https://hub.docker.com/r/guessi/ssl-certs-checker/)
 
-## Setup Guide
+## Usage
 
-    go get -u github.com/guessi/ssl-certs-checker
+    docker run --rm -v $(pwd)/hosts.yaml:/opt/hosts.yaml:ro -it guessi/ssl-certs-checker --help
 
-## Examples
+    NAME:
+       SSL Certificate Checker - check SSL certificates at once
 
-run with docker
+    USAGE:
+       ssl-certs-checker [global options] command [command options] [arguments...]
 
-    docker build -t guessi/ssl-certs-checker .
+    COMMANDS:
+       help, h  Shows a list of commands or help for one command
+
+    GLOBAL OPTIONS:
+       --config value, -C value   config file
+       --timeout value, -t value  dialer timeout in second(s) (default: 5)
+       --help, -h                 show help (default: false)
+
+
+## Sample Output
 
     docker run --rm -v $(pwd)/hosts.yaml:/opt/hosts.yaml:ro -it guessi/ssl-certs-checker --config hosts.yaml
 
-install binary to your ${GOPATH} and run locally
-
-    go install github.com/ssl-certs-checker
-
-    ${GOPATH}/bin/ssl-certs-checker --config hosts.yaml
-
     +--------------------+----------------+---------------------------------------+-------------------------------+-------------------------------+--------------------+-----------------------+
     | Host               | Common Name    | DNS Names                             | Not Before                    | Not After                     | PublicKeyAlgorithm | Issuer                |
     +--------------------+----------------+---------------------------------------+-------------------------------+-------------------------------+--------------------+-----------------------+
     | www.google.com:443 | www.google.com | www.google.com                        | 2020-04-15 20:25:31 +0000 UTC | 2020-07-08 20:25:31 +0000 UTC | ECDSA              | GTS CA 1O1            |
-    | www.azure.com:443  | *.azure.com    | *.azure.com                           | 2019-12-17 19:51:44 +0000 UTC | 2020-12-17 19:51:44 +0000 UTC | RSA                | Microsoft IT TLS CA 4 |
-    | www.amazon.com:443 | www.amazon.com | amazon.com                            | 2020-01-23 00:00:00 +0000 UTC | 2020-12-31 12:00:00 +0000 UTC | RSA                | DigiCert Global CA G2 |
-    |                    |                | amzn.com                              |                               |                               |                    |                       |
-    |                    |                | buybox.amazon.com                     |                               |                               |                    |                       |
-    |                    |                | corporate.amazon.com                  |                               |                               |                    |                       |
-    |                    |                | home.amazon.com                       |                               |                               |                    |                       |
-    |                    |                | iphone.amazon.com                     |                               |                               |                    |                       |
-    |                    |                | konrad-test.amazon.com                |                               |                               |                    |                       |
-    |                    |                | mp3recs.amazon.com                    |                               |                               |                    |                       |
-    |                    |                | p-nt-www-amazon-com-kalias.amazon.com |                               |                               |                    |                       |
-    |                    |                | p-y3-www-amazon-com-kalias.amazon.com |                               |                               |                    |                       |
-    |                    |                | p-yo-www-amazon-com-kalias.amazon.com |                               |                               |                    |                       |
-    |                    |                | static.amazon.com                     |                               |                               |                    |                       |
-    |                    |                | test-www.amazon.com                   |                               |                               |                    |                       |
-    |                    |                | uedata.amazon.com                     |                               |                               |                    |                       |
-    |                    |                | us.amazon.com                         |                               |                               |                    |                       |
-    |                    |                | www.amazon.com                        |                               |                               |                    |                       |
-    |                    |                | www.amzn.com                          |                               |                               |                    |                       |
-    |                    |                | www.cdn.amazon.com                    |                               |                               |                    |                       |
-    |                    |                | www.m.amazon.com                      |                               |                               |                    |                       |
-    |                    |                | yellowpages.amazon.com                |                               |                               |                    |                       |
-    |                    |                | yp.amazon.com                         |                               |                               |                    |                       |
     +--------------------+----------------+---------------------------------------+-------------------------------+-------------------------------+--------------------+-----------------------+
 
+## Build from Source
+
+    go get -u github.com/guessi/ssl-certs-checker
+
+    cd ${GOPATH}/src/github.com/guessi/ssl-certs-checker
+
+    vim ... # made some changes
+
+    go install github.com/guessi/ssl-certs-checker
+
+    ssl-certs-checker --help
+
 # License
 
 [MIT LICENSE](LICENSE)
diff --git a/hosts.yaml b/hosts.yaml
index 841c4b2..abc75ee 100644
--- a/hosts.yaml
+++ b/hosts.yaml
@@ -1,7 +1,6 @@
 hosts:
 - www.google.com
-- www.azure.com
-- www.amazon.com
-# - www.google.com:443
-# - www.azure.com:443
+# - www.azure.com
 # - www.amazon.com:443
+# - example.org
+# - example.com:443