Added: Ability to add custom formats, working similar to qualities. (#2669)

Originally called project metis, this feature allows you to do a lot of cool stuff, such as upgrading to a x265 encode, downloading releases with multiple languages, etc. Check out the wiki page at: https://github.com/Radarr/Radarr/wiki/Custom-Formats to learn more! Note: This feature is currently in "beta" and will get more tags and features in the future. Please let me know, if you have any issues and I hope this will allow for a lot of customization!

README.md

@@ -100,7 +100,7 @@ Radarr is currently undergoing rapid development and pull requests are actively
 
 ### Requirements
 
-* [Visual Studio Community](https://www.visualstudio.com/vs/community/) or [MonoDevelop](http://www.monodevelop.com)
+* [Visual Studio Community 2017](https://www.visualstudio.com/vs/community/) or [MonoDevelop](http://www.monodevelop.com)
 * [Git](https://git-scm.com/downloads)
 * [Node.js](https://nodejs.org/en/download/)
 
@@ -119,11 +119,11 @@ Radarr is currently undergoing rapid development and pull requests are actively
 
 * To build run `sh build.sh`
 
-**Note:** Windows users must have bash available to do this. [cmder](http://cmder.net/) which is a console emulator for windows has bash as part of it's default installation.
+**Note:** Windows users must have bash available to do this. If you installed git, you should have a git bash utility that works.
 
 ### Development
 
-* Open `NzbDrone.sln` in Visual Studio or run the build.sh script, if Mono is installed
+* Open `NzbDrone.sln` in Visual Studio 2017 or run the build.sh script, if Mono is installed. Alternatively you can use Jetbrains Rider, since it works on all Platforms.
 * Make sure `NzbDrone.Console` is set as the startup project
 * Run `build.sh` before running