Navigate multiple paths sequentially
Merge branch 'master' into jake

Conflicts:
	src/com/example/spheroapp/MainActivity.java
Start nav on button click
Merge branch 'master' into jake
adding voice message
fixing conflicts
Navigating routes works! Wassup, yo.
Merge branch 'master' of https://github.com/ZihaoAllen/PennApps2013

Conflicts:
	src/com/example/spheroapp/MainActivity.java
Remove dead code
Update picture with compass
Merge branch 'master' of https://github.com/ZihaoAllen/PennApps2013
Merge branch 'master' into prakhar