enable CI

.travis.yml

@@ -0,0 +1,15 @@
+language: python
+
+python:
+  - "3.6"
+
+install:
+  - pip install -r requirements.txt
+  - pip install codecov pytest pytest-cov
+
+script:
+  - pytest --cov=./ -v
+  - pylint --rcfile=.pylintrc encryption host kademlia libp2p network peer stream_muxer transport tests
+
+after_success:
+  - codecov