Update CONTRIBUTING.md

Author: adipandas

docs/readme/CONTRIBUTING.md

@@ -1,3 +1,5 @@
 * @adipandas
 
 * @cnavarrete : Bug fix [issue #22](https://github.com/adipandas/multi-object-tracker/issues/22)
+
+* @cansik : Pull request [#31](https://github.com/adipandas/multi-object-tracker/pull/31) [#32](https://github.com/adipandas/multi-object-tracker/pull/32)