docs(overview): Improve usage docs

Closes #299

docs/overview.md

@@ -21,6 +21,9 @@ import React from "react";
 import ReactDOM from "react-dom";
 import {MegadraftEditor, editorStateFromRaw} from "megadraft";
 
+//Import megadraft.css
+import 'megadraft/dist/css/megadraft.css'
+
 class App extends React.Component {
   constructor(props) {
     super(props);
@@ -33,9 +36,13 @@ class App extends React.Component {
 
   render() {
     return (
-      <MegadraftEditor
-        editorState={this.state.editorState}
-        onChange={this.onChange}/>
+      //Add some margin left to show plugins sidebar
+      <div style={{marginLeft: 80}}>
+        <MegadraftEditor
+          editorState={this.state.editorState}
+          onChange={this.onChange}
+          placeholder='Add some text'/>
+      </div>
     )
   }
 }
@@ -45,10 +52,3 @@ ReactDOM.render(
   document.getElementById('container')
 );
 ```
-
-Then link the main css (`dist/css/megadraft.css`) on your page, you can use the
-Sass source on your build, if you wish.
-
-```html
-<link href="node_modules/megadraft/dist/css/megadraft.css" rel="stylesheet">
-```

package.json

@@ -1,6 +1,6 @@
 {
   "name": "megadraft",
-  "version": "0.6.15",
+  "version": "0.7-alpha.0",
   "description": "Rich Text editor built on top of draft.js",
   "main": "lib/Megadraft.js",
   "dependencies": {