Fixed #26 Modified unit-test for kv class.
Fixed #57 Modified unit-test memcache class.
Modified code to fit PRS-2 standard.
Merge pull request #72 from fuqiang007/master

Fixed #56 #57 modified unit-test for kv memcache class
Merge pull request #73 from Trainxy/master

Fixed #49, #50
Fixed #75, attached the dev patch and tests.