Add tutorials to documentation

Since previous tutorials were out of date and caused errors, I've created new ones based on the old tutorials.
I felt doc would be a good place to integrate the tutorial.

Old tutorials:
http://blog.alex-rudenko.com/2014/08/18/getting-started-with-a-new-css-framework-called-visual-component-library-vcl/
http://blog.alex-rudenko.com/2014/09/21/learning-vcl-how-to-build-a-vcl-component-demo/