Integrate Circle CI

circle.yml

@@ -0,0 +1,16 @@
+machine:
+    python:
+        version: 2.7
+    environment:
+        - TOX_ENV=docs
+        - TOX_ENV=lint
+        - TOX_ENV=py26
+        - TOX_ENV=py27
+
+dependencies:
+    pre:
+        - pip install tox
+
+test:
+    override:
+        - tox -e $TOX_ENV