Merge pull request #31 from daivanov/master

Removing unnecessary branch in execution, which is handled by the following code
Merged pull 31 
Upgraded compiler plugin to 2.4
Upgraded Java version to 1.7
Upgraded Maven plugins to the latest version
Modified docs
Updated versions and license info
Changed .gitignore
Testing webhook
Removed webhook test
Improved pom.xml
Reverted source and target to 1.6