Add brief README.md guide

openrewrite/README.md

@@ -0,0 +1,15 @@
+## Development Setup
+
+For the time being the setup is unfortunately a bit complicated due to the dependencies between `rewrite-javascript` and `rewrite-remote`.
+To be able to make changes to both these projects and make sure that they work together, we use `npm link`.
+
+1. Start by cloning both `openrewrite/rewrite-javascript` (this repo) and `moderneinc/rewrite-remote`
+2. For both repos perform the following steps:
+   1. Run the build using `npm run build`
+   2. Copy the `package.json` file to the `dist` folder
+   3. Go into the `dist` folder and run `npm link`
+   4. This last step only needs to be done once
+3. Now `npm link` needs to be run in either project to link it into `node_modules`:
+   1. For `openrewrite/rewrite-javascript` run `npm link @openrewrite/rewrite-remote`
+   2. For `moderneinc/rewrite-remote` run `npm link @openrewrite/rewrite`
+4. Now you are basically all set. As the tests read the production source files from `dist` instead of `src` it is recommended to have `tsc --watch` running which you can do using `npm run dev`