Merge pull request #623 from kemuru/master

docs: improve readme "getting started" section

Author: alcercu

web/README.md

@@ -1,3 +1,23 @@
-# @kleros/kleros-v2-web
+## Contributing
 
-🚧 ⚖️ 🚧
+### Pre-Requisites
+
+If you haven't already, you need to follow all the previous steps of the **Contributing** section of the repo's [README](https://github.com/kleros/kleros-v2/blob/master/README.md#contributing)
+
+### Getting Started
+
+#### Compile the contracts
+
+```bash
+# first you need to go to the kleros-v2/contracts folder, and then compile them
+$ cd kleros-v2/contracts
+$ yarn build
+```
+
+#### Start the frontend
+
+```bash
+# first you need to be in the kleros-v2/web folder, and then start it
+$ cd kleros-v2/web
+$ yarn start
+```