Testing: Lint files with Travis-CI

See #7
Testing: Only test Puppet manifests

Puppet modules should test themselves
Fix syntax errors in wp manifest
Fix lint errors in webserver manifest
Fix lint errors in tools manifest
Fix lint errors in security manifest
Fix lint errors in PHP manifest
Fix lint errors in mail manifest
Fix lint errors in environment manifest
Fix lint errors in database manifest
Turn off autoloader layout check
Fix lint errors for env resource
Fix lint errors for line resource
Fix lint errors for init
Fix lint errors for subversion manifest
Add Gemfile.lock to the repo
Fix reference to renamed svnupgrade class
Add basic documentation for testing
Merge pull request #134 from Automattic/issue-7

Test syntax with puppet-lint and Travis-CI