Use official google/protobuf

[DrDelay]

With v3.1.0 protobuf supports generating proto-classes for PHP on its own, without a third party compiler.

I have recompiled the protos with it and did some first successful tests parsing some messages. I put the proto-classes in a new branch as 5f1930b, along with some adjustments to the composer.json and the compile-script.

Shall we switch to this completely?

/cc NicklasWallgren/PokemonGoAPI-PHP#135

[jaspervdm]

Sorry for my late reply, I haven't been very active in POGO development. When I get the chance I will try it out, but since you seem to be more actively working on it I trust your judgement and you can switch the repo if you want :)