flake8 and speed up travis build

Author: icereval

.travis.yml

@@ -1,12 +1,24 @@
 language: python
+
 python:
   - 2.6
   - 2.7
   - 3.3
-  #- 3.4 # "No output has been received in the last 10 minutes, this potentially indicates a stalled build or something wrong with the build itself."
+  - 3.4
+
+sudo: false
+
+cache:
+  directories:
+    - $HOME/wheelhouse
+
+env:
+  - WHEELHOUSE=$HOME/wheelhouse
+
 install:
-  - pip install -U .
-  - pip install httpretty pytest flake8
+  - pip wheel --find-links=$HOME/wheelhouse --wheel-dir=$HOME/wheelhouse . httpretty pytest flake8
+  - pip install --find-links=$HOME/wheelhouse --no-index . httpretty pytest flake8
+
 script:
   - flake8 .
   - py.test

dataverse/__init__.py

@@ -1,9 +1,9 @@
 from __future__ import absolute_import
 
 from requests.packages import urllib3
-urllib3.disable_warnings()
+urllib3.disable_warnings()  # noqa
 
-from dataverse.connection import Connection
-from dataverse.dataverse import Dataverse
-from dataverse.dataset import Dataset
-from dataverse.file import DataverseFile
+from dataverse.connection import Connection  # noqa
+from dataverse.dataverse import Dataverse  # noqa
+from dataverse.dataset import Dataset  # noqa
+from dataverse.file import DataverseFile  # noqa

dataverse/settings/__init__.py

@@ -1,8 +1,8 @@
 from __future__ import absolute_import
 
-from dataverse.settings.defaults import *
+from dataverse.settings.defaults import *  # noqa
 
 try:
-    from dataverse.settings.local import *
+    from dataverse.settings.local import *  # noqa
 except ImportError as error:
     pass