Merge pull request #3 from pborreli/typos

Fixed CS
Added CONTRIBUTING.md file
Merge pull request #4 from Bladrak/contributing

Added CONTRIBUTING.md file
fix day value in seconds, add missing magic constant
Add a UnsupportedException

Add UnsupportedException
Merge pull request #7 from eko/master

Add a UnsupportedException
[mongodb] fix test to work with latest version of Mongo client
fix test
Make ApcCache flushAll method to clear both user & system cache types

Fix
Merge pull request #10 from eko/apc-flushall

Make ApcCache flushAll method to clear both user & system cache types
Fixed PRedis constructor
Merge pull request #11 from mremi/fix-predis

Fixed PRedis constructor
remove non used 'use' statement
Fixed typos