bin/src version should be raised to 1.7 to avoid javac errors while compiling with java 8:
[javac] error: Source option 6 is no longer supported. Use 7 or later.
[javac] error: Target option 6 is no longer supported. Use 7 or later.
[javac] error: Source option 6 is no longer supported. Use 7 or later.
[javac] error: Target option 6 is no longer supported. Use 7 or later.