Fetch the fragments for this book

app/components/SimpleEditor/SimpleEditorWrapper.jsx

@@ -17,10 +17,12 @@ export class SimpleEditorWrapper extends React.Component {
   }
 
   componentWillMount () {
-    const { getCollections, getFragments } = this.props.actions
+    const { book, actions } = this.props
+    const { getCollections, getFragments } = actions
 
-    getCollections().then(result => {
-      getFragments(result.collections[0])
+    // TODO: might not need to fetch all the collections?
+    getCollections().then(() => {
+      getFragments(book)
     })
 
     const { user } = this.props