Added Maven resolvers to structure
Seq -> Set in resolvers list
Fixed output
* code cleanup
+ resolvers tests
Merge pull request #6 from dancingrobot84/feat-resolvers-0.13

Added resolvers extraction
+ android-sdk-plugin support and tests for it
= fixed 'bare' test
= fixed the rest of tests
= catching NoClassDefFoundException when android plugin is not present
= remove android-sdk-plugin dependency and fix classpath
    hell by using our own SBT keys named equivalently
- projectLayout (assuming no other layout than ant/gradle ones)
= fixed tests after rebasing