Update the Flask documentation

Due to the outdated versions of the used Flask version.
The documentation needed a rework to correct the dependency.
Add the missing Application code and explanation.

Another need is to rework on the documentation Layouts and texts
to uniform the style of the guides. More Pull Requests will follow-up
to solve the guide update issue.

Author: vioum

Guides/Python/HelloWorld.md

@@ -16,13 +16,14 @@ $ git clone https://github.com/cloudControl/python-flask-example-app.git
 $ cd python-flask-example-app
 ~~~
 
-Now you have a small but fully functional Flask application.
+The code from the example repository is ready to be deployed. Lets still go
+through the different files and their purpose real quick.
 
 ### Dependency Tracking
 The Python buildpack tracks dependencies via pip and the `requirements.txt` file. It needs to be placed in the root directory of your repository. The example app specifies only Flask itself as a dependency and looks like this:
 
 ~~~pip
-Flask==0.9
+Flask==0.10.1
 ~~~
 
 ### Process Type Definition
@@ -36,6 +37,27 @@ web: python server.py
 
 Left from the colon we specified the **required** process type called `web` followed by the command that starts the app and listens on the port specified by the environment variable `$PORT`.
 
+###The Actual Application Code
+
+The actual application code is really straight forward. We import the required
+modules and create an instance of the class. Next we set the routes to trigger
+our hello() function which will then render the jinja template.
+
+~~~python
+import os
+from flask import Flask, render_template
+
+app = Flask(__name__)
+
+
+@app.route('/')
+def hello():
+    return render_template('hello.jinja', domain=os.environ['DOMAIN'])
+
+app.debug = True
+app.run(host='0.0.0.0', port=int(os.environ['PORT']))
+~~~
+
 ## Pushing and Deploying the App
 Choose a unique name to replace the `APP_NAME` placeholder for your application and create it on the cloudControl platform:
 
@@ -47,25 +69,25 @@ Push your code to the application's repository, which triggers the deployment im
 
 ~~~bash
 $ cctrlapp APP_NAME/default push
-Counting objects: 16, done.
-Delta compression using up to 4 threads.
-Compressing objects: 100% (10/10), done.
-Writing objects: 100% (16/16), 258.30 KiB, done.
-Total 16 (delta 2), reused 16 (delta 2)
-       
+Counting objects: 3, done.
+Delta compression using up to 8 threads.
+Compressing objects: 100% (2/2), done.
+Writing objects: 100% (3/3), 283 bytes | 0 bytes/s, done.
+Total 3 (delta 1), reused 0 (delta 0)
+
 -----> Receiving push
------> No runtime.txt provided; assuming python-2.7.3.
------> Preparing Python runtime (python-2.7.3)
+-----> No runtime.txt provided; assuming python-2.7.8.
+-----> Preparing Python runtime (python-2.7.8)
 -----> Installing Distribute (0.6.36)
 -----> Installing Pip (1.3.1)
 -----> Installing dependencies using Pip (1.3.1)
-       Downloading/unpacking Flask==0.9 (from -r requirements.txt (line 1))
-       ...
-       Successfully installed Flask Werkzeug Jinja2 markupsafe
+       Downloading/unpacking Flask==0.10.1 (from -r requirements.txt (line 1))
+        ...
+       Successfully installed Flask Werkzeug Jinja2 itsdangerous MarkupSafe
        Cleaning up...
 -----> Building image
------> Uploading image (25M)
-       
+-----> Uploading image (25.1 MB)
+
 To ssh://[email protected]/repository.git
  * [new branch]      master -> master