Merge pull request #14 from jmtoball/master

Fix expire_all_in_set-method and back it with a test.
Changing version number to 0.0.6
Merge pull request #15 from fjsj/vivekn

Changing version number to 0.0.6
Fix connection to use specified db number
Merge pull request #16 from nudge/master

Fix connection to use specified db number
Support for keyword arguments
Merging origin/master'
Code refactoring by @djgilcrease
Add contributors
Fix newlines
Add support for mget and mget_json
Handle parameters = None
mget: only return found keys
Merge pull request #19 from nudge/master

Add support for mget and mget_json
Update README.md