Track PackageInstaller
derp
Merge pull request #4 from WoH/patch-1

Track PackageInstaller
Update README.mkdn
Update README.mkdn
untrack wallpapers (from now on free on Google Play)

Change-Id: Ica6e4dd94462b0505524286dbcd67248a8a5a0c3
Merge remote-tracking branch 'upstream/jellybean' into jellybean