Fix visibility
Add javadoc
Setup goorvydocJar
Merge pull request #13 from saturday06/maven-central

Prepareation of Maven Central
Add android-library test
Add clean test projects for integrationTest and sample task
Use beforeTask
User defined productFlavors and buildTypes support
Integration tests for user defined flavors and build types
Merge pull request #18 from saturday06/variant

User defined productFlavors and buildTypes support
findPlugin -> hasPlugin
Organize default proguard config
More limitation for travis
Add gradle.properties to .gitignore
uploadArchives before integrationTest
Support 65536 methods for app test
Add supported versions
Update README.md
typo
Add gradle properties for travis