Add travis config

.travis.yml

@@ -0,0 +1,31 @@
+language: python
+
+os:
+  - linux
+
+python:
+  - 2.6
+  - 2.7
+  - 3.4
+  - 3.5
+  - 3.6
+
+addons:
+  apt:
+    packages:
+      - python-numpy
+      - python3-numpy
+      - python-setuptools
+
+install:
+  - pip install --upgrade pip
+  - pip install coveralls
+  - pip install pytest
+
+script:
+  coverage run --source=formulate setup.py test
+
+after_success:
+  coveralls
+
+notifications:

setup.cfg

@@ -0,0 +1,2 @@
+[aliases]
+test=pytest

setup.py

@@ -34,6 +34,7 @@ def get_version():
       test_suite='tests',
       install_requires=['numpy', 'pyparsing', 'colorlog'] +
                        (['enum34'] if sys.version_info < (3, 4) else []),
+      setup_requires=['pytest-runner'],
       tests_require=['pytest'],
       classifiers=[
           'Development Status :: 2 - Pre-Alpha',