Proto commits in Rantanen/node-mumble

These 4 commits are when the Protocol Buffers files have changed:

Commit:47c2677
Author:justinmchase

Add original Mumble.proto back

The documentation is generated from this commit.

Commit:537cdde
Author:Justin Chase

Convert project to use protobufjs instead of protobuf

Commit:7de33fa
Author:Frederick Gnodtke

Updated protocol version from https://github.com/mumble-voip/mumble/blob/master/src/Mumble.proto

Commit:a8426b6
Author:Mikko Rantanen

Initial commit