Update Read me

Author: ahelal

README.md

@@ -1,2 +1,36 @@
 # ansible-oauth2-proxy
-An ansible role to install oauth2 proxy
+An ansible role to install [oauth2 proxy](https://github.com/bitly/oauth2_proxy) 
+
+Variables
+---------
+
+```yaml
+oaut2_proxy_http                         : "https://github.com/bitly/oauth2_proxy/releases/download/v2.0.1/oauth2_proxy-2.0.1.linux-amd64.go1.4.2.tar.gz"
+oaut2_proxy_http_sha256                  : "c6d8f6d74e1958ce1688f3cf7d60648b9d0d6d4344d74c740c515a00b4e023ad"
+oauth2_user                              : "oauth2"
+oauth2_dir                               : "/var/oauth2_proxy"
+oauth2_dir_tmp                           : "/var/oauth2_proxy/tmp"
+oauth2_dir_log                           : "/var/log/oauth2-proxy/"
+oauth2_config_path                       : "/var/oauth2_proxy/oauth2_config.cfg"
+oauth2_compress_filename                 : "{{ oaut2_proxy_http | basename }}"
+oauth2_filename                          : "{{ oauth2_compress_filename |replace('.tar.gz', '') }}"
+
+# See for all options https://raw.githubusercontent.com/bitly/oauth2_proxy/master/contrib/oauth2_proxy.cfg.example
+oauth2_proxy_config                      :
+    http_address                         : "127.0.0.1:5000"
+    upstreams                            : [ "127.0.0.1:6060" ]
+    provider                             : "github" 
+    email-domain                         : "*"
+    cookie-secure                        : false
+    cookie-domain                        : "localhost:5000"
+    cookie_secret                        : "COOK_SECRET"
+    client_id                            : "YOUR_CLIENT_ID"
+    client_secret                        : "CLIENT_SECERET"
+
+oauth2_config_cmdline_args               : "-github-org='MYCoolORg'"
+```
+
+
+License
+--------
+MIT