message: docs(readme): dev section
diff: @@ -56,7 +56,7 @@ const elements = [
  const graphStyles = { width: '100%', height: '100%' };
  -const BasicGraph = () => (
  +const BasicFlow = () => (
  <ReactFlow elements={elements} style={graphStyles} />
  );
  ```
  @@ -109,7 +109,7 @@ The same applies to the nodes (className: `react-flow__node`) and edges (classNa
  You could achieve the same effect by passing a style prop to the React Flow component:
  -```
  +```javascript
  <ReactFlow elements={element} style={{ background: 'red', width: '100%' height: '300px' }} />
  ```
  @@ -260,7 +260,7 @@ The control panel contains a zoom-in, zoom-out, fit-view and a lock/unlock butto
  ```javascript
  import ReactFlow, { Controls } from 'react-flow-renderer';
  -const GraphWithControls = () => (
  +const FlowWithControls = () => (
  <ReactFlow
  elements={elements}
  >
  @@ -292,13 +292,15 @@ You can find all examples in the [example](example) folder or check out the live
  ## Development
  -If you want to contribute or develop some custom features the easiest way is to start the dev server:
  +First of all you need to install the React Flow dependencies `npm install` and the ones of the examples `cd example && npm install`.
  +
  +If you want to contribute or develop some custom features the easiest way is to start the dev server.
  ```
  npm run dev
  ```
  -This serves the content of the `examples` folder and watches changes inside the `src` folder. The examples are using the source of the `src` folder.
  +This serves the content of the `example` folder and watches changes inside the `src` folder. The examples are using the source of the `src` folder.
  ## Testing
  @@ -308,7 +310,6 @@ Testing is done with cypress. You can find all test in the [`integration/flow`](
  npm run test
  ```
  -
  ## Thanks!
  Special thanks to [Andy Lindemann](https://github.com/AndyLnd) for a lot of helpful contributions!
  