Sort imports with isort.

This is the result of:

    $ isort --recursive examples templates transformers utils hubconf.py setup.py

examples/test_examples.py

@@ -12,14 +12,17 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
+from __future__ import absolute_import, division, print_function
 
-import sys
-import unittest
 import argparse
 import logging
+import sys
+import unittest
+
+import run_generation
+import run_glue
+import run_squad
+
 
 try:
     # python 3.4+ can use builtin unittest.mock instead of mock package
@@ -27,9 +30,6 @@ try:
 except ImportError:
     from mock import patch
 
-import run_glue
-import run_squad
-import run_generation
 
 logging.basicConfig(level=logging.DEBUG)