add travis configuration

Author: Willi Ballenthin

.travis.yml

@@ -0,0 +1,23 @@
+language: python
+
+matrix:
+    include:
+        - os: linux
+          python: 2.7
+
+        - os: linux
+          python: 3.5
+
+install:
+    - pip install --upgrade pip pytest pytest-cov
+    - pip install -e .
+
+before_script:
+    # stop the build if there are Python syntax errors or undefined names
+    #- flake8 . --count --select=E901,E999,F821,F822,F823 --show-source --statistics
+    # exit-zero treats all errors as warnings.  The GitHub editor is 127 chars wide
+    #- flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+
+script:
+    #- find . -name \*.py -exec pep8 --ignore=E501 {} \;
+    - py.test ./tests/ -v --cov=Registry