Add Travis CI

By now, it will only test the coding style rules defined for the
project, which are basically a few exceptions to the PEP8.

.gitignore

@@ -5,6 +5,9 @@ _site/
 # When developing for ec2 `vagrant provision' is quite handy
 /Vagrantfile
 /.vagrant
+# Building the package
 /build
 /dist
 /bootstrap_vz.egg-info
+# Testing
+/.tox

.travis.yml

@@ -0,0 +1,7 @@
+language: python
+python:
+    - "2.7"
+install:
+    - "pip install tox"
+script:
+    - "tox"

tox.ini

@@ -0,0 +1,10 @@
+[flake8]
+ignore = E101,E221,E241,E501,W191
+max-line-length = 110
+
+[tox]
+envlist = flake8
+
+[testenv:flake8]
+deps = flake8
+commands = flake8 bootstrapvz/ --exclude=minify_json.py