Merge pull request #170 from mapzen/ekta/design

assets for a, b, car, bike, walk, switch, line
Extracts DebugView component
Moves debug view from BaseActivity to RouteFragment
Adds closest instruction details to debug view
Injects views using ButterKnife
Adds closest instruction coordinates
Adds current location
Organizes debug data
Adds compass direction for current location
Happy linting
Checking the styles
Merge pull request #172 from mapzen/chuck/enhanced-debug-view

Enhanced debug view
updates tilesource url
Presents a notification when routing
adds routing in the navigation bar and the ability to exit routing in the notification bar
adds routing notification for first instruction
adds test for notification routing
adds test for checking if exiting notifications works
cosmetic fixes
adds initActivity