Update formatting of README
Pre-iOS 7 status bar style
Added methods for normalizing a string to a bill code and checking a string for a bill code. Closes #155.
Added methods to retrieve bills by type and number, sorted by congress (number).
Initial implementation of search on bill codes, per #244.
Add bill id to event label
Add party and state to event label
Merge branch 'develop' into feature/viewdeck-refactor

* develop:
  Add party and state to event label
  Add bill id to event label
  Initial implementation of search on bill codes, per #244.
  Added methods to retrieve bills by type and number, sorted by congress (number).
  Added methods for normalizing a string to a bill code and checking a string for a bill code. Closes #155.
  Pre-iOS 7 status bar style
  Update formatting of README