include test varients when compiling android projects
bump version and update README
redirect retrolambda stdout to info log level
better error message when not using java8, and updated README, fixes #21
changed way the retrolambda.jar dependency is defined
Fixed typos in README
updated to latest version of retrolambda
added new changes to README
Merge branch 'develop'

Conflicts:
	README.md
	build.gradle