Detach scroll listeners on hasMore prop change

Fix danbovey#44

Author: PierreGUI

src/InfiniteScroll.js

@@ -46,6 +46,13 @@ export default class InfiniteScroll extends Component {
     this.attachScrollListener();
   }
 
+  componentWillReceiveProps(nextProps) {
+    if (nextProps.hasMore === false) {
+      this.detachScrollListener();
+      this.detachMousewheelListener();
+    }
+  }
+
   componentWillUnmount() {
     this.detachScrollListener();
     this.detachMousewheelListener();