remove puppetfile as not required as change now in upstream nodejs modul...

remove puppetfile as not required as change now in upstream nodejs module
add support for http proxies
add support for custom templates for sinopia config and service definitions. 

Can we get this merged and released. If you don't have time to merge then i can do it if you give me authority. It would be nice to package it and upload to puppet forge as well. This would be really helpful and mean that it can be used with librarian-puppet.