Add dependencies to travis install. Track test coverage in travis.

.coveragerc

@@ -0,0 +1,12 @@
+[run]
+branch = True
+omit = krun/tests/*
+
+[report]
+exclude_lines =
+    pragma: no cover
+    def __repr__
+    raise NotImplementedError
+    if __name__ == .__main__.:
+    # ignore abstract methods/properties mocked with pass
+    pass

.gitignore

@@ -1,3 +1,4 @@
+.coverage
 examples/*.log
 examples/*.json
 examples/*.bz2

.travis.yml

@@ -3,4 +3,8 @@ language: python
 python:
   - "2.7"
 
-script: py.test
+install:
+  - pip install cffi
+  - pip install pytest-cov
+
+script: py.test --cov-report term --cov=krun  krun