Update README.md

Remove bintray

README.md

@@ -20,12 +20,13 @@ Cockatrice is an open-source multiplatform supported program for playing tableto
 # Downloads
 
 We offer downloads for all full releases (recommended) and the latest development versions. Full releases are checkpoints with major feature or UI enhancements between them, but currently we don't have a set schedule for releasing new updates. The development version contains the most recently added features and bugfixes, but can be more unstable. Downloads for development versions are updated automatically with every change.
-Downloads are hosted on [BinTray](https://bintray.com/cockatrice/Cockatrice).
 
-- Latest full release (**recommended**): [ ![Download](https://api.bintray.com/packages/cockatrice/Cockatrice/Cockatrice/images/download.svg) ](https://bintray.com/cockatrice/Cockatrice/Cockatrice/_latestVersion#files)<br>
+- Latest full release (**recommended**): [Download from GitHub](https://github.com/cockatrice/cockatrice/releases/latest)<br>
 
-- Latest development version: [ ![Download](https://api.bintray.com/packages/cockatrice/Cockatrice/Cockatrice-git/images/download.svg) ](https://bintray.com/cockatrice/Cockatrice/Cockatrice-git/_latestVersion#files)<br>
-*Development builds may not be stable or contain several bugs. Especially if from a branch other than `master`!*
+- Latest development version: [Download from GitHub](https://github.com/cockatrice/cockatrice/releases/TBD)
+   - Development builds may not be stable and/or contain several bugs.
+   - If you'd like to be a Cockatrice Beta Tester, use this version.
+   - More information can be [found here](https://github.com/Cockatrice/Cockatrice/wiki/Release-Channels)