add text to test button

src/BookBuilder.jsx

@@ -167,6 +167,10 @@ export class BookBuilder extends React.Component {
     const { book } = this.props
     htmlToEpub(book.id).then((res) => {
       console.log('res', res)
+      const path = res.path
+      const url = 'localhost:3000/vivliostyle/viewer/vivliostyle-viewer.html#b=' + path
+      // this.props.history.push()
+      window.location = '/vivliostyle/viewer/vivliostyle-viewer.html#b=/uploads/' + path
     })
     // console.log('props', this.props)
     // console.log('actions', this.props.actions)
@@ -217,7 +221,7 @@ export class BookBuilder extends React.Component {
     return (
       <div className='bootstrap modal pubsweet-component pubsweet-component-scroll'>
         <div className={styles.bookBuilder}>
-          <button onClick={this.handleHTMLToEpub} />
+          <button onClick={this.handleHTMLToEpub}> Do it </button>
           <div
             className='col-lg-offset-2 col-lg-8 col-md-8 col-sm-12 col-xs-12'
             ref='outerContainer'