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+## WARNING
+
+* All forks must respect [GPLv3](https://www.gnu.org/licenses/gpl-3.0.html). Please report violations in Issues or [through email](mailto:im@austinhuang.me).
+* Although publishing a fork is allowed by license, it is strongly discouraged to do so as it divides the effort and creates confusion. It is, therefore, recommended to send a pull request back to us, so that the larger community can enjoy your improvement. (This does not apply if you're adapting this app for a different platform other than Instagram.)
+
+## Contributing
+
+Thank you for your interest in InstaGrabber! As we grow in popularity, it becomes apparent that we are short on hands. Every contribution counts!
+
+### I can code Java!
+
+Great!
+
+Generally, we want to imitate features in the actual Instagram app. There are many Instagram private API repositories on GitHub for you to refer to. Note that you should minimize POST: If a job should be done with GET, then there has to be a GET endpoint. (Indeed, sometimes you need multiple repositories for reference.)
+
+As long as you have tested your version (please indicate device and API version) and make sure it works, then you can submit a PR! Large UI changes have to be voted on by the community, so it would be helpful to upload some screenshots.
+
+Check errors are for reference only. Try to minimize them, but usually they don't make a big difference.
+
+### I can't code Java, but I want to!
+
+Fun fact: Austin took over this project and learned Java on the fly (I'm not joking, I only do JavaScript before taking this over).
+
+Even though Java is quite annoying, it is still possible to learn it by trying to understand what these code do (Easier if you have coding experience in other languages).
+
+If you have questions, don't be afraid t ask for help!
+
+### I found a bug!
+
+Bugs are inevitable during active development, as nobody can cover all the possible test cases. You can either email your crash dump to `instagrabber@austinhuang.me` (The crash reporter will fill in this email for you) or create a GitHub issue.
+
+If you're on GitHub, please follow the template.