Add OSX to Travis matrix

.travis.yml

@@ -1,21 +1,33 @@
 notifications:
   email: false
 
-language: python
+language: generic
 
 sudo: false
 
 cache:
   directories:
-    - $HOME/.cache/pip
+    - $HOME/miniconda3
 
-python:
-  - "2.7"
-  - "3.6"
+before_cache:
+  - rm -rf $HOME/miniconda3/pkgs/cache
+  - rm -rf $HOME/miniconda3/envs/hosts
+
+os:
+  - linux
+  - osx
+
+env:
+  - PYTHON_VERSION="2.7"
+  - PYTHON_VERSION="3.6"
+
+before_install:
+  - export PATH="$HOME/miniconda3/bin:$PATH"
 
 install:
-  pip install flake8 mock nose
+  - ci/install_conda.sh
+  - ci/install_conda_env.sh
 
 script:
-  - nosetests
-  - flake8
+  - ci/test_repo.sh
+  - ci/lint_repo.sh