Update version and android build tools
Merge pull request #66 from gcurtis/update-gradle

Update version and android build tools
Update android studio iml
Merge pull request #67 from box/android_studio_iml_update

Update android studio iml
Update build.gradle
Sync project with gradle
Merge pull request #68 from gcurtis/sync-proj

Sync project with gradle
make oauth flow more flexible to override
Merge pull request #69 from box/oauthui

make oauth flow more flexible to override
allow override shouldAutoRefreshOAuth to cusomize whether client should auto-refresh oauth upon expiration
Merge pull request #70 from box/autorefresh

allow override shouldAutoRefreshOAuth to cusomize whether client should ...
use getter for oauthwebviewdata for better extensibility
Merge pull request #71 from box/webviewdata

use getter for oauthwebviewdata for better extensibility
Update to work with android studio beta
Merge pull request #73 from box/android_studio_beta

Update to work with android studio beta