Update .travis.yml

boot up redis
Merge pull request #61 from lxfontes/patch-1

Update .travis.yml
Wait smarter for an empty connection pool.
Merge pull request #62 from habnabit/master

Wait smarter for an empty connection pool
set command updated to redis 2.8
credits
Merge pull request #63 from jettify/master

SET command arguments updated to redis 2.8
PEP-8 cleanup
Support for Redis 2.8.9 HyperLogLog commands
Minor bugfix in tests.mixins.RedisVersionCheckMixin
Minor optimization, avoid raising TypeError in list_or_args
Merge pull request #64 from jeethu/HyperLogLog

HyperLogLog commands
Use hiredis parser if available
benchmark example
add etataurov to README.md
Merge pull request #65 from etataurov/hiredis

Use hiredis parser if available
txredisapi-1.2