- install android sdk 19 everytime, against this one the project is compiled (see android-maven-plugin)
- install build tools through android sdk manager
not needed when building as jar
update to be consistent with android sdk 19 which is now used for android-maven-plugin
new build tools install
not needed, missed in last commit
add monkeyrunner for sample project, that ensures that the sample is working
remove app before running tests
Merge pull request #22 from BigMichi1/pom

add some important information in parent pom to prepare maven central release
Merge remote-tracking branch 'upstream/master' into alltogether

Conflicts:
	.travis.yml