* add documentation for version 0.2
* Overview documentation for collection view
* finish layered navigation
* finish listview tutorial
Clean up Using collection view doc.
Merge commit '019e1db'
* fix tutorial
* add images
Merge branch '0.4' into gmaster

* 0.4:
  * fix tutorial * add images
  Clean up Using collection view doc.
  * finish listview tutorial
  * finish layered navigation
  * Overview documentation for collection view
  * add documentation for version 0.2