#43 fix missing hiredis for travis
#43 fix _in_pubsub handling
#43 add protocol_class to Pool.create
Merge pull request #44 from tumb1er/issue-43

Issue 43 hiredis parser and stream read performance
Throw AssertionError when HiRedisProtocol is initialized and hiredis is not available.
Code style.
Added hiredis_test benchmark.
merge from remote