[Documentation] Add few things in the readme file (fixes SteelSeries#1).

README.rst

@@ -1,2 +1,57 @@
 django-segment
 ==============
+This a project to setup segment with django.
+
+How to install
+==============
+Use pip:
+
+.. code-block:: bash
+
+    pip install django-segment
+
+Or use a requirement file.
+
+Settings
+========
+You must configure few things like the segment write key. You can configure
+four variable in your settings file, the SEGMENT_WRITE_KEY, SEGMENT_DEBUG,
+SEGMENT_SEND and SEGMENT_ON_ERROR, SEGMENT_WRITE_KEY is required others is
+optional. For example:
+
+.. code-block:: python
+
+    DEBUG = True
+    SEGMENT_WRITE_KEY = 'my_write_key'
+    SEGMENT_DEBUG = DEBUG
+
+Template
+========
+First add the context processors in your settings:
+
+.. code-block:: python
+
+    TEMPLATES = [
+        {
+            'BACKEND': 'django.template.backends.django.DjangoTemplates',
+            'DIRS': [],
+            'APP_DIRS': True,
+            'OPTIONS': {
+                'context_processors': [
+                    'django.template.context_processors.debug',
+                    'django.template.context_processors.request',
+                    'django.contrib.auth.context_processors.auth',
+                    'django.contrib.messages.context_processors.messages',
+                    'segment.context_processors.segment'
+                ],
+            },
+        },
+    ]
+
+Then you can include the segment template in your base template:
+
+.. code-block:: django
+
+    {% include "_segment.html" %}
+
+Enjoy folks.