OSX app

This creates a first class app package for osx,

users will be able to download the zip file and they will see something like this,

![screen shot 2014-12-02 at 7 32 53 pm](https://cloud.githubusercontent.com/assets/412280/5275494/026cb47c-7a5a-11e4-92ec-121e06e58e89.png)


which they can drag to their application folder.

double clicking the app will make sure they have mono 3.10 installed. if they don't they get a dialog asking them to download it, giving them the option to be taken to the download page

![screen shot 2014-12-02 at 7 35 19 pm](https://cloud.githubusercontent.com/assets/412280/5275537/bfd0c17a-7a5a-11e4-92c8-3e61da268ffb.png)


if they have mono 3.10 installed the app will start in the background


Todo:
- right now, the browser doesn't launch since sonarr thinks it's running in non-interactive mode
- it would be nice if we could add a toolbar icon, similar to the windows tray icon that would let you launch or kill sonar.



![screen shot 2014-12-02 at 7 37 31 pm](https://cloud.githubusercontent.com/assets/412280/5275540/c8720c58-7a5a-11e4-80e0-78d32f4e16eb.png)