Greatly improved documentation README.rst.

Author: carlos-jenkins

README.rst

@@ -1,8 +1,17 @@
 ======================
-Python Github Webhooks
+Python GitHub Webhooks
 ======================
 
-Simple Python WSGI application to handle Github webhooks.
+Simple Python WSGI application to handle GitHub webhooks.
+
+
+Install
+=======
+
+::
+    git clone [email protected]:carlos-jenkins/python-github-webhooks.git
+    cd python-github-webhooks
+
 
 Dependencies
 ============
@@ -12,13 +21,33 @@ Dependencies
    sudo pip install -r requirements.txt
 
 
-Install
-=======
-
-
 Setup
 =====
 
+You can configure what the application does by changing ``config.json``:
+
+::
+
+    {
+        "github_ips_only": false,
+        "enforce_secret": "",
+        "return_scripts_info": true
+    }
+
+:github_ips_only: Restrict application to be called only by GitHub IPs. IPs
+ whitelist is obtained from
+ `GitHub Meta <https://developer.github.com/v3/meta/>`_
+ (`endpoint <https://api.github.com/meta>`_).
+:enforce_secret: Enforce body signature with HTTP header ``X-Hub-Signature``.
+ See ``secret`` at
+ `GitHub WebHooks Documentation <https://developer.github.com/v3/repos/hooks/>`_.
+:return_scripts_info: Return a JSON with the ``stdout``, ``stderr`` and exit
+ code for each executed hook using the hook name as key.
+
+
+Adding Hooks
+============
+
 This application will execute scripts in the hooks directory using the
 following order:
 
@@ -29,6 +58,62 @@ following order:
     hooks/{event}
     hooks/all
 
+The application will pass to the hooks the JSON received as first argument.
+Hooks can be written in any scripting language as long as the file is executable
+and has a shebang. A simple example in Python could be:
+
+::
+
+    #!/usr/bin/env python
+    # Python Example for Python GitHub Webhooks
+
+    import os
+    import sys
+    import json
+    from tempfile import mkstemp
+
+    payload = json.loads(sys.argv[1])
+    _, tmpfile = mkstemp()
+
+    ### Do something with the payload
+    if payload['repository']['name'] == 'my-repo-name':
+        f = open(tmpfile, 'w')
+        f.write(json.dumps(payload))
+        f.close()
+
+
+Test
+====
+
+The following will launch the Flask web server in debug mode at port ``5000``.
+
+::
+
+    python webhooks.py
+
+
+Deploy
+======
+
+To deploy in Apache, just add a ``WSGIScriptAlias`` directive to your
+VirtualHost file:
+
+::
+
+    <VirtualHost *:80>
+        ServerAdmin [email protected]
+        ServerName  my.site.com
+        DocumentRoot /var/www/site.com/my/htdocs/
+
+        # Handle Github webhook
+        <Directory "/var/www/site.com/my/python-github-webhooks">
+            Order deny,allow
+            Allow from all
+        </Directory>
+        WSGIScriptAlias /webhooks /var/www/site.com/my/python-github-webhooks/webhooks.py
+
+    </VirtualHost>
+
 
 License
 =======
@@ -50,3 +135,13 @@ License
    specific language governing permissions and limitations
    under the License.
 
+
+Credits
+=======
+
+This project is just the reinterpretation and merge of two approaches:
+
+- `github-webhook-wrapper <https://github.com/datafolklabs/github-webhook-wrapper>`_.
+- `flask-github-webhook <https://github.com/razius/flask-github-webhook>`_.
+
+Thanks.