* Add proto array fork choice object to RPC
* Add pb
* Add pb
* Expose proto array store object
* Test
* Merge branch 'forkchoice-endpoint' of github.com:prysmaticlabs/prysm into forkchoice-endpoint
* s/Nodes/nodes
* Remove proto from gitignore
* More implementations of GetProtoArrayForkChoice
* Comments
* Use hex
* Gazelle
* GetForkChoice Test
* Remove pb.go
* Merge branch 'master' into forkchoice-endpoint
* Typo, thanks Raul!
* Merge branch 'forkchoice-endpoint' of github.com:prysmaticlabs/prysm into forkchoice-endpoint
