Refactor module to major upgrade 4.x

#### 4.0.0 - 2014-06-29

* Refactored the module, test before pushing to production
* Added/Removed/Renamed/Changed parameters
* Updated template for new settings for newrelic.ini, newrelic.cfg and nrsysmond.cfg
* Closed PR #7 - Ensure log directory is created
* Closed PR #13 - Fix PHP conf dir for Ubuntu 14.04