update android gradle plugin to 0.14.4

to work with AS >= 0.9.0 plugin >= 0.14.0 is required
also update gradle to 2.2.
update android gradle plugin to 1.0.0-rc4
update gradle to 2.2.1 and android gradle plugin to 1.0.0
Merge pull request #710 from betheg/as

update android gradle plugin to 0.14.4