Default error code to 500

[fixes #18]
Minor fix, added missing closing div tag
Merge pull request #20 from level09/master

Minor fix, added missing closing div tag
Update requirements
Merge branch 'master' of https://github.com/sloria/cookiecutter-flask
Update readme
Use explicit relative import instead of implicit.

Implicit relative imports are discouraged
(http://legacy.python.org/dev/peps/pep-0008/#imports) and no longer supported
in python 3.
Merge pull request #21 from roberttstephens/use_explicit_relative_imports

Use explicit relative import instead of implicit.
Get app secret key from environment variable
Merge branch 'master' of https://github.com/sloria/cookiecutter-flask
Update and pin dependencies
Update tests for factory-boy>=2.4.0

[fixes #23]
Remove unused base factory class
Update dependencies
Use pytest.main instead of shelling out
Update changelog
Add compat.py and fix Python 3 error
Add abstract base factory
Update changelog
Fix travis.yml; use py.test and install dev-requirements

Fixes #25