add generator script from master.
update android studio to 0.4.0.
update all relative update for android studio.
fix link errors:
  android:actionBarStyle requires API level 11
  Invalid package reference in library; not included in Android: javax.annotation.processing. Referenced from butterknife.internal.InjectViewProcessor.
update minSdk to 9 from 8, froyo is used less 1.6 % DEC, 2013.
make instrumentTest work.
fix android test by adding android-test plugin.
remove integration-tests module which is moved to src/instrumentTest.