Update CONTRIBUTORS.md

adding rickster53

CONTRIBUTORS.md

@@ -38,3 +38,4 @@
  - [starkadius] (https://github.com/starkadius)
  - [wraslor](https://github.com/wraslor)
  - [mrwebsmith](https://github.com/mrwebsmith)
+ - [rickster53](https://github.com/rickster53)