Add the possibility to add a header to the HTTP response  when response code is equal to 200, 204, 301, 302 or 304.
Merge pull request #209 from abraham1901/dev

Bugfix: Fixed long names virtual hosts
Implemented input validation - type hash - for the (optional) add_header parameter.
Merge pull request #208 from hdanes/add_header

Add the possibility to add a header to the HTTP response
Fixed location containing '\', such as '~ \.php$'
Merge branch 'master' of https://github.com/jfryman/puppet-nginx into dev