Rework peerDependencies

[ain]

Following warnings can be avoided:

18-Jul-2016 11:11:41    npm WARN peerDependencies The peer dependency handlebars@~4.0.5 included from handlebars-helper-rawinclude will no
18-Jul-2016 11:11:41    npm WARN peerDependencies longer be automatically installed to fulfill the peerDependency 
18-Jul-2016 11:11:41    npm WARN peerDependencies in npm 3+. Your application will need to depend on it explicitly.