make rendr-handlebars a devDependency

the rendr-handlebars module it is only required for running the tests.
fix syntax error in package.json
reenable view.attributes from backbone
Merge pull request #172 from lusini/add-view-attributes-object

Reenable View.attributes from Backbone
Merge pull request #171 from c089/make-rendr-handlebars-a-devDependency

make rendr-handlebars a devDependency
Made paths more consistent between client and server and friendly to RequireJS.
Added comments.
Merge pull request #173 from alexindigo/master

Made paths more consistent between client and server and friendly to RequireJS.