Add Travis CI configuration

Author: vitalk

.travis.yml

@@ -0,0 +1,23 @@
+language: python
+
+python:
+  - 2.6
+  - 2.7
+  - 3.3
+  - 3.4
+  - pypy
+
+env:
+  - PYTEST=2.3.5
+  - PYTEST=2.4.2
+  - PYTEST=2.5.2
+  - PYTEST=2.6.4
+  - PYTEST=2.7.0
+
+install:
+  - pip install -q pytest==$PYTEST
+  - pip install -q -r requirements/main.txt
+  - pip install -q -e .
+
+script:
+  - py.test