Update README.md
Removes AppContainer's dependency on U2020App
Merge pull request #33 from jacobtabak/master

Removes AppContainer's dependency on U2020App
Updates gradle plugin dependency
Use https in gradle distribution url
Merge pull request #36 from felipecsl/master

Updates gradle plugin dependency
Uses latest gradle plugin version
Merge pull request #37 from felipecsl/master

Uses latest gradle plugin version
Merge pull request #1 from JakeWharton/master

Merging from upstream