Update readme.

Author: torquescrew

README.md

@@ -1,9 +1,15 @@
-# GitFiend 
+# GitFiend
 
-This is the main repo for [GitFiend](https://gitfiend.com).
-It contains the source and the tooling to build and package GitFiend. 
-The frontend code is included, but minified. 
-To build, see [here](./gitfiend-shell/README.md).
+This is the root repo for [GitFiend](https://gitfiend.com).
+It contains the source and the tooling to build and package GitFiend. Contains 2 other repos as submodules:
 
-If you encounter bugs, usability issues, or you think GitFiend is missing critical features, feel free to make an issue.
+- [gitfiend-shell](./gitfiend-shell/README.md): The app main process and window. Contains scripts to build and package everything.
+
+- [gitfiend-core](./gitfiend-core/readme.md):
+  The backend/core of GitFiend. Reads git repos and handles data requests and actions.
+
+The frontend code is included in gitfiend-shell, but minified for now.
 
+## Support
+
+If you encounter bugs, usability issues, or you think GitFiend is missing critical features, feel free to make an issue.