v2.1.1

Checks if installer is already present - @patgmac
Removes Script & Launch Daemon if System Checks are not passed - @magnusviri
Fixed Issue #14 - @magnusviri
Fixed Issue #15 - @patgmac
Fixed Typo in README.md - @jamescchh

Note: Cached Installer location has changed in v2+ to /Applications/ which allows us to base the script off of if the installer is already present. Please view the updated README.md.