Added RELEASE-CHECKLIST.md, to help prevent sadpandas

Author: yuvipanda

RELEASE-CHECKLIST.md

@@ -0,0 +1,11 @@
+To prevent sad pandas, please check the following items before making a release:
+
+- Make sure that the APP POINTS TO COMMONS. This is very important, and should be
+  ensured. The variables to check are `API_URL`, `IMAGE_URL_BASE`, `HOME_URL` and
+  `EVENTLOG_WIKI`, in `CommonsApplication.java`. Preferred way to do this is to have
+  a staved `git stash` that applies these, and then apply them (and make a branch)
+  before pushing them out
+- Check for database schema migrations. If you modified the `DATABASE_VERSION` in
+  `DBOpenHelper`, ensure that you have appropriately written recursive migrations
+  in your appropriate `onUpgrade` methods. **Test** this before pushing out! You
+  only need to test from the last database version, so should not be that hard!