Add Travis CI configuration file

.gitignore

@@ -1,3 +1,9 @@
 *.pyc
 *.pyo
 *.egg-info
+.coverage
+tests/mail.txt
+
+gpg_keyring/
+htmlcov/
+tests/fixtures/

.travis.yml

@@ -0,0 +1,35 @@
+sudo: false
+language: python
+env:
+  - DJANGO_VERSION="Django>=1.8,<1.9"
+  - DJANGO_VERSION="Django>=1.9,<1.10"
+  - DJANGO_VERSION="Django>=1.10,<1.11"
+  - DJANGO_VERSION="Django>=1.11,<2.0"
+  - DJANGO_VERSION='https://github.com/django/django/archive/master.tar.gz'
+python:
+  # None of the currently supported Django versions support Python 2.6
+  # - "2.6"
+  - "2.7"
+  - "3.4"
+  - "3.5"
+  - "3.6"
+# matrix:
+#   exclude:
+#     # Django 2.0 won't support Python 2.x anymore
+#     - python: "2.7"
+#       env: DJANGO_VERSION='https://github.com/django/django/archive/master.tar.gz'
+before_script:
+  - pip install coverage coveralls flake8 python-gnupg
+  - pip install -q "$DJANGO_VERSION"
+  # Make sure we have gpg installed; this also logs the version of GPG
+  - gpg --version
+script:
+  - flake8 email_extras --exclude=email_extras/migrations
+  - coverage run --include=email_extras/*.py manage.py migrate
+  - coverage run --include=email_extras/*.py --omit=email_extras/migrations/*.py manage.py test tests
+after_script:
+  - coverage combine
+  - coveralls
+matrix:
+   allow_failures:
+      - env: DJANGO_VERSION='https://github.com/django/django/archive/master.tar.gz'