[ALOY-714] Shorthand for some proxies ie. RightNavButton

implement proper DOM hierarchy detection

generating left/right nav buttons, double event listeners

prevent adding the event listener twice
[ALOY-691] Alloys Data Binding feature does not respect platform property

Added test project
travis setup
install alloy globally for travis
use spaces, not tabs
refactor, no node attributing hacking
Merge pull request #341 from appcelerator/pr/336

Shorthand XML for nav buttons
improve conditional handling
Merge pull request #342 from appcelerator/pr/339

[ALOY-691] fix duplicate dataFunction creation with platform attribute