Update CONTRIBUTING.md

CONTRIBUTING.md

@@ -2,10 +2,43 @@
 
 Thanks for your interest in TSDX! You are very welcome to contribute. If you are proposing a new feature, make sure to [open an issue](https://github.com/palmerhq/tsdx/issues/new/choose) to make sure it is inline with the project goals.
 
-0. Make sure you dont have existing `tsdx` global installations that may conflict: `npm uninstall -g tsdx`.
-1. Fork this repository to your own GitHub account and then clone it to your local device.
-2. Install the dependencies: `yarn install`
-3. Run `yarn build` to build the typescript files to javascript
-4. Run `yarn link` to link the local repo to NPM
+## Setup
+0. First, remove any existing `tsdx` global installations that may conflict.
 
-You can now use `tsdx` locally as you work on `tsdx` code. Be sure to run `yarn test` before you make your PR to make sure you haven't broken anything.
+   ```
+   yarn global remove tsdx # or npm uninstall -g tsdx
+   ```
+
+1. Fork this repository to your own GitHub account and clone it to your local device:
+
+   ```
+   git clone https://github.com/your-name/tsdx.git
+   cd tsdx
+   ```
+
+2. Install the dependencies and build the Typescript files to Javascript:
+
+   ```
+   yarn && yarn build
+   ```
+
+   > **Note:** you'll need to run `yarn build` any time you want to see your changes.
+
+3. Make it so running `tsdx` anywhere will run your local dev version:
+
+   ```
+   yarn link
+   ```
+
+
+4. To use your local version when running `yarn build`/`yarn start`/`yarn test` in a TSDX project, run this in the project:
+
+   ```
+   yarn link tsdx
+   ```
+
+   You should see a success message: `success Using linked package for "tsdx".`  The project will now use the locally linked version instead of a copy from `node_modules`.
+
+## Submitting a PR
+
+Be sure to run `yarn test` before you make your PR to make sure you haven't broken anything.