- xray was useful during dev testing but is neither a dev or runtime dep
- its presence causes issues for libraries that handle signals themselves

Also
- updates grpc.gemspec with requirements

apply/apply! update a hash with an OAuth2 authorization token

- ensure that lint check gets run when prior to running unittests
- fixes a description of the default rake command
- adds a dependency on Faraday, a HTTP/REST client

- add rubocop as a dev dependency
- fixed many style violations it reported, often using --auto-correct
- add a rubocop config
 - .rubocop.yml shows the exceptions
 - .rubocopy_todo.yml tracks outstanding style issues
- adds a rake task to allow rubocop styling checks to be automated

This resolves issues decoding empty messages.

- Adds a dependency to protobuf-ruby in the gemfile
- Updates math.proto to proto3
- Updates math server and client to use protoc protos
- Updates interop server and client to use protoc protos

Also
- Fixes/Updates the noproto samples

TESTED: math_server and math_client can communicate locally.
	Change on 2015/01/07 by temiola <temiola@google.com>
-------------
Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=83483448

	Change on 2015/01/07 by ctiller <ctiller@google.com>
-------------
Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=83451760

- Adds a dependency to protobuf-ruby in the gemfile
- Updates math.proto to proto3
- Updates math server and client to use protoc protos
- Updates interop server and client to use protoc protos

Also
- Fixes/Updates the noproto samples

TESTED: math_server and math_client can communicate locally.
	Change on 2015/01/07 by temiola <temiola@google.com>
-------------
Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=83483448

- Adds the service and message classes generated from beefcake and a patched proto compiler
- Adds an interop client that uses these service and message classes
- Adds an interop server that implement the service description

TESTED interop client works with the interop server
	Change on 2014/12/08 by temiola <temiola@google.com>
-------------
Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=81615139

	Change on 2014/12/01 by nnoble <nnoble@google.com>
-------------
Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=81111468