Add appraisal config
Add appraisal
Add appraisal to gemfile.lock
Add rails v3.2 and v4.0 gemfile
Ignore generated gemfile.lock
Add gemfile for travis-ci

default gemfile, this has gemfile.lock:
- Gemfile

gemfile generated by appraisal, this does not have gemfile.lock:
- gemfiles/rails3_2.gemfile
- gemfiles/rails4_0.gemfile
Run tests against rails 3.1, 3.2 and v4.0 with appraisal

Conflicts:
	.gitignore
	Gemfile.lock
	exception_notification.gemspec