grpc - RPC system from Google

	Commit message (Expand)	Author	Age
*	Add clang-format to sanity	Craig Tiller	2015-09-24
*	It is a bad idea to have a map with string_refs as output params.	Julien Boeuf	2015-09-22
*	Credentials plugin fixes (after the branch was merged).	Julien Boeuf	2015-09-21
*	Merge branch 'master' of github.com:grpc/grpc into core_creds_plugin	Julien Boeuf	2015-09-15
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\| *	Removed grpc_security.h from auth_context.h	David Garcia Quintas	2015-09-03
\| *	Replicate C++ docs from master to beta branch	Craig Tiller	2015-09-03
* \|	Design and implementation of the core credentials plugin API.	Julien Boeuf	2015-08-31
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*	Shuffling headers around.	Julien Boeuf	2015-08-28