Support for mongoose 3.8
Fix for .lean option not taking effect
Merge from Intervox/mongoose-redis-cache
Making cache disabled by default. User has to pass cache: true parameter
Depending on mongoose parameter redisCache.

Need to change README.md
Merge remote-tracking branch 'Baarzo/master'

Signed-off-by: Thomas Conner <thomas.conner@me.com>

Conflicts:
	index.js
	readme.md
	src/index.coffee