Add travis config.

.travis.yml

@@ -0,0 +1,28 @@
+sudo: false
+language: python
+python:
+        - 2.7
+        - 3.4
+        - 3.5
+install:
+        - python setup.py install
+        - pip install -r requirements-test.txt
+        - pip install codecov
+script:
+        # Build and run C tests
+        - ./c_tests/run.sh
+        # Note: since we're testing an installed version, the code coverage
+        # must be checked against this version, not the one in './rig_c_scp/'.
+        - >
+            py.test py_tests/ \
+                    --cov "$(./utils/rig_path.py)" \
+                    --cov py_tests \
+                    --durations=10
+        # Code quality check
+        - flake8 rig_c_scp py_tests
+after_success:
+        - codecov
+notifications:
+        email: false
+matrix:
+    fast_finish: true