title: Issue in showing File Upload for image in Draft JS
body: <p>I using the draft-js to show editor in web application. But i am facing issue in showing the file upload option in draft editor. </p>
  
  <p>here is a screenshot :
  <a href="https://i.stack.imgur.com/NLosD.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/NLosD.png" alt="1"></a></p>
  
  <p>This is how editor is shown on their demo 
  <a href="https://i.stack.imgur.com/1MTV0.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/1MTV0.png" alt="2"></a></p>
  
  <p>You can check the demo here <a href="https://jpuri.github.io/react-draft-wysiwyg/#/" rel="nofollow noreferrer">https://jpuri.github.io/react-draft-wysiwyg/#/</a></p>
  
  <h2>Please check the code below and suggest the solution :</h2>
  
  <pre><code>import React, { Component } from 'react';
  import logo from './logo.svg';
  
  import { EditorState } from 'draft-js';
  import { Editor } from 'react-draft-wysiwyg';
  import 'react-draft-wysiwyg/dist/react-draft-wysiwyg.css';
  
  
  class App extends Component {
  
    constructor(props) {
      super(props);
      this.state = {
        editorState: EditorState.createEmpty(),
      };
    }
  
    onEditorStateChange: Function = (editorState) =&gt; {
      this.setState({
        editorState,
      });
    };
  
    render() {
      const { editorState } = this.state;
      return (
        &lt;div className="App"&gt;
          &lt;header className="App-header"&gt;
  
           &lt;Editor
    editorState={editorState}
    toolbarClassName="toolbarClassName"
    wrapperClassName="wrapperClassName"
    editorClassName="editorClassName"
    onEditorStateChange={this.onEditorStateChange}
  toolbar={{
      inline: { inDropdown: true },
      list: { inDropdown: true },
      textAlign: { inDropdown: true },
      link: { inDropdown: true },
      history: { inDropdown: true },
      inputAccept: 'application/pdf,text/plain,application/vnd.openxmlformatsofficedocument.wordprocessingml.document,application/msword,application/vnd.ms-excel'
    }}
  /&gt;
           &lt;/header&gt;
        &lt;/div&gt;
      );
    }
  }
  
  export default App;
  </code></pre>