Update README.rst

doc updates
Merge pull request #5 from gbougeard/master

Update dependencies to Play 2.1-RC4 and set evolutionplugin setting as String
Merge pull request #4 from loicdescotte/patch-1

Update README.rst
Store object for db/driver abstraction (allows multiple db conf from application.conf)
exception/rename Store
rename
rename
Merge pull request #8 from loicdescotte/master

Config object for db/driver abstraction
Try to use Play 2.1