grpc - RPC system from Google

	Commit message (Collapse)	Author	Age
*	Merged from master and resolved merge conflicts	murgatroid99	2016-01-08
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*	Updated dependencies, fixed a couple of tests	murgatroid99	2016-01-06
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*	Merge branch 'core_validate_metadata' into ruby_metadata_downcasing	murgatroid99	2016-01-06
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\| *	Expose core metadata validation functions in public headers	murgatroid99	2016-01-06
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* \|	Parital implementation of ruby header checking	murgatroid99	2016-01-06
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*	Generate gemspec with a template	murgatroid99	2015-12-18
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*	Include roots.pem with Ruby package	murgatroid99	2015-12-18
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*	Bundled C core with Ruby library	murgatroid99	2015-12-18