Update README.md

README.md

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 # Lean Coffee
 
-This is a client for the Lean Coffee backend.
+This is the front-end (client) only.
+
+It uses React + Apollo, the back-end is provided by [Graphcool](https://www.graph.cool/).
+
+### Getting started
+
+* Clone the project: `$ git clone https://github.com/nandito/lean_coffee.git`
+* Go to the directory: `$ cd lean_coffee`
+* Switch to develop branch `$ git checkout develop`
+* Install dependencies: `$ yarn install` or `$ npm install`
+* Run the app: `$ yarn start` or `$ npm start`