New name for configuration file: littlechef.cfg. Fixes #134. Fixes #179
Add DeprecationWarning for names other than littlechef.cfg
Update README with new config file name
Fix deprecationwarning message, tidy up README
Add SSH ControlMaster performance tip. Fixes #100. Thanks to @vjpr for the tip
Merge pull request #184 from tobami/rename-config-to-littlechef.cfg

New name for configuration file: littlechef.cfg. Fixes #134. Fixes #179