Rakefile require 'puppetlabs_spec_helper/rake_tasks'

close #2
Fix indentation
* Fix 'PUPPET_VERSION' environment variable values.
* Update Gemfile
Delete dependency locks for matrix builds.
Adding the Travis badge
Improve the README :

* Syntax highlighting
* Fix code style
Some notes about tests.
Merge branch 'master' of github.com:bdossantos/puppet-module-papertrail