Fix ScrimInsets* classes to use ViewCompat.postInvalidateOnAnimation

Change-Id: I7ef8e65110fa861605f4d4f9aebb10ac775c29b8
Merge pull request #62 from romannurik/master

Fix ScrimInsets* classes to use ViewCompat.postInvalidateOnAnimation
Fix for 20.0.0 build tools bug

reference: https://code.google.com/p/android/issues/detail?id=77629
Merge pull request #65 from VipSaran/master

Fix for 20.0.0 build tools bug
Update travis.yml for lollipop

Updated build-tools to rev 21.0.1
Updated android component, image and target to 21
Merge pull request #68 from ardock/update-travis-to-android-21

Update travis.yml for lollipop
Update build tools rev 21.0.2

Updated build tools to rev 21.0.2 in android build.gradle, building doc and travis.yml
This rev. solves the windows users issue:
https://code.google.com/p/android/issues/detail?id=77629

Travis wont work until they upgrade or you install 23.0.5 sdk manually,
emulator or something i dont know do. I ll wait your/their solution.
http://docs.travis-ci.com/user/languages/android/
https://github.com/travis-ci/travis-cookbooks/blob/master/ci_environment/android-sdk/CHANGELOG.md
Merge pull request #70 from ardock/update-build-tools-rev-21.0.2

Update build tools rev 21.0.2
Update to v21 SwipeRefreshLayout. Also fix nav drawer BACK button bug.

Change-Id: I13a0880240c4d49b2fdca5948594567332ca8aaf
Merge pull request #71 from romannurik/master

Update to v21 SwipeRefreshLayout. Also fix nav drawer BACK button bug.
Merge pull request #1 from google/master

Merge updates from source repo.
Fix & improve building doc.
Fix/improve building doc.
Fix/improve building doc.
Fix/improve building doc.
Fix/improve building doc.
Properly format text to 80 cols limit in building doc.
Remove obsolete reference to Wear SDK from building doc.
Update Wear SDK tag reference in building doc (4.4W > 4.4W2).
Merge pull request #74 from eyecatchup/master

Update BUILDING.md