Add development instructions to README

README.md

@@ -3,3 +3,29 @@
 Still in development.
 
 See deployment here: https://kwheelan.github.io/budget-request-demo/
+
+## Contributing
+
+This repo uses yarn for package management and webpack for a 
+development server and production bundler.
+
+### Setup
+
+Install Node.js (recommend using [nvm](https://github.com/nvm-sh/nvm)) and [yarn](https://classic.yarnpkg.com/lang/en/docs/install/) if you don't have it already.
+
+Install package dependencies:
+```bash
+yarn
+```
+
+Run the development server:
+```bash
+yarn start
+```
+
+### Creating a New Release
+
+Run webpack bundler:
+```bash
+yarn build
+```