Allow user to specify a UIImage as the title for a nav bar button item.
Update readme to note that UIImages can be sent to create UIBarButtons
Update test app rakefile for RM2.0 syntax
Add tests for creating a UIBarButton with a UIImage.
One more test to make sure it's the RIGHT image ;)
Added Winston-Salem Crime Map to the list of apps that use ProMotion.
Merge pull request #68 from markrickert/add-app-to-readme

Added Winston-Salem Crime Map to the list of apps that use ProMotion.
Added tests for the left bar button item.
Clarified app_delegate code
Merge pull request #67 from markrickert/version-0.6-imagebuttons

Allow user to specify a UIImage as the title for a nav bar button item.
Switched demo app link
Changed set_nav_bar_button to accept a system_icon hash key that allows creation of system buttons like add.
Fix linebreak in the readme.
Merge branch 'master' of https://github.com/sxross/ProMotion

Conflicts:
	lib/ProMotion/screens/_screen_module.rb
Merge pull request #70 from markrickert/version-0.6-imagebuttons

Fix linebreak in the readme.
Fixed system item in set_bar_bar_button to take UIImage change into account; updated README
Merge pull request #73 from sxross/master

set_nav_bar_button_item addition (again)

Thanks @sxross!
Added tests to support #74
Fixing specs to work in RM 2.0

https://github.com/clearsightstudio/ProMotion/blob/version-0.6/lib/ProMo
tion/screen_helpers/split_screen.rb#L9
Merge pull request #77 from macfanatic/title_function_from_module

Added tests to support #74