Added option to connect through unix socket in redis cache driver
Correct Redis connection troubleshooting
some code rewrite
Code cleanup
Update Redis Caching block

Added config options
Added changelog entry
Merge branch 'develop' of github.com:kakysha/CodeIgniter into develop
Spaces, log message
typos
Update caching.rst
newline at the eof
Merge pull request #2705 from kakysha/develop

Better Redis connection handling