added set(key, value, **kwargs)-redis-py-2.7.4 +, setnx, setex
SESS-11
+review SYS @jesse @zvika.gart
edited doc string of redis:MockRedis._creation_ok
SESS-11
+review SYS-127
virtual time support for set and setex & other minor changes
SESS-11
+review SYS-127
removing an unnecessary set op in test_ttl
SESS-11
+review SYS-127
fixed the _get_total_seconds func to return int, improved logging for SET related tests and other minor changes
SESS-11
+review SYS-127
changing version in setup.py to 2.7.5.1
SESS-11