Support maven arguments from env var and add usage help
Merge pull request #7 from bparees/usage

Support maven arguments from env var and add usage help
fix help arg check
Merge pull request #8 from bparees/usage

fix help arg check
quote variable in arg check
Merge pull request #9 from bparees/usage

quote variable in arg check
exit after printing usage
Merge pull request #10 from bparees/usage

exit after printing help
also save application class files with save-artifacts and do not default to clean for maven