Merge pull request #117 from botstory/pyup-update-pytest-3.0.5-to-3.0.6

Update pytest to 3.0.6

requirements.txt

@@ -1,6 +1,6 @@
 aiohttp==1.2.0
 motor==1.1
-pytest==3.0.5
+pytest==3.0.6
 pytest-aiohttp==0.1.3
 pytest-asyncio==0.5.0
 pytest-catchlog==1.2.2