Version 2.3: iOS 7 compatibility and refactoring all the views. 

- Convert most of the submodules into CocoaPods. 
- Refactor main stops view,
  - Get rid of the header section. 
  - Search with more native behaviour. 
  - Get rid of all button pictures. 
- Refactor stop details view,
  - Get rid of Page View Controller
  - Toggle view type by setting stop times tableview's alpha to zero. 
- Refactor stops map view,
  - Adjust the annotation selection logic