Add dodobas to the list of contributors

Author: dodobas

CONTRIBUTORS.md

@@ -17,3 +17,4 @@ codebase. (sorted chronologically)
 * Tobias McNulty [@tobiasmcnulty](https://github.com/tobiasmcnulty)
 * Praekelt Foundation - [@praekeltfoundation](https://github.com/praekeltfoundation)
 * Chris Johnson - [@cjcodes](https://github.com/cjcodes)
+* Dražen Odobašić [@dodobas](https://github.com/dodobas)