added readthedocs and travis config files

.readthedocs.yml

@@ -0,0 +1,11 @@
+requirements_file: doc/requirements.txt
+
+build:
+    image: latest
+
+python:
+    version: 3.5
+
+# Don't build any extra formats
+formats:
+    - none

.travis.yml

@@ -0,0 +1,19 @@
+language: python
+cache: pip
+python:
+  - 3.5
+  - 3.6
+env:
+  - LOGGING=info
+install:
+  - pip install -r requirements.txt
+  - pip install pytest pytest-cov wheel codecov
+  - python3 setup.py bdist_wheel
+  - pip install dist/PennyLane*.whl
+script:
+  - make coverage
+after_success:
+  - codecov
+notifications:
+  slack:
+    secure: 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