docs update: RedisPool api reference draft
more docs; tiny examples
one more command
'migrate' command test disabled
docs & docstrings updated
version bumped (v0.1.0)
few more commands implemented
fix env variable with redis verstion
Merge pull request #19 from jettify/fix-env-variable

fix env variable that stores redis version
set commands
few strings commands and tests
Merge pull request #20 from jettify/feature-set

set commands
docs update: autodoc mixins reference
small Makefile fixes
hash commands