Merge pull request #2038 from akihikodaki/group_upstream

Import react as React in src/GroupAddressPicker.js

Author: t3chguy

src/GroupAddressPicker.js

@@ -14,6 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
+import React from 'react';
 import Modal from './Modal';
 import sdk from './';
 import MultiInviter from './utils/MultiInviter';