added mvn-golang into Package Management section (#2292)
added mvn-golang into Package Management section (#2292)

I have added mvn-golang into Package Management section because the tool provides way to load project dependencies automatically and tune them through external CVS tools (tune for branch, revision and tag)
theckman/awesome-go,jmelfi/awesome-go,avelino/awesome-go,pconcepcion/awesome-go,Oire/awesome-go,sadlil/awesome-go