Add circleci.

Author: daspecster

circle.yml

@@ -0,0 +1,12 @@
+dependencies:
+  override:
+    - pip install --upgrade pip codecov
+    - pip install -r requirements.txt
+    # latest as of Nov. 7, 2016: 2.7.12, 3.4.5, 3.5.2
+    - pyenv local 2.7.12 3.4.4 3.5.2
+
+test:
+  override:
+    - nosetests --with-coverage --cover-package=ziptastic
+  post:
+    - codecov