Setup package for CI

Add `.travis.yml` and `make ci` recipe for to enable CI testing.

Author: cmlccie

.travis.yml

@@ -0,0 +1,9 @@
+sudo: false
+language: python
+python:
+  - "2.7"
+  - "3.5"
+  - "3.6"
+install: "make init"
+script: "make ci"
+cache: pip

Makefile

@@ -29,6 +29,10 @@ update : clean-venv init versioneer.py
 .PHONY : tests
 tests: toxtest lint ;
 
+.PHONY : ci
+ci :
+	pytest
+
 .PHONY : toxtest
 toxtest : local/environment.sh tox.ini
 	source local/environment.sh && tox