fix(DefaultPacker): fixes plural name not being infered from name.

Fixes #224

Author: iobaixas

src/module/support/default-packer.js

@@ -98,10 +98,10 @@ RMModule.factory('DefaultPacker', ['restmod', 'inflector', 'RMPackerCache', func
           meta = this.getProperty('jsonMeta', 'meta');
 
       if(_resource.$isCollection) {
-        name = this.getProperty('jsonRootMany') || this.getProperty('jsonRoot') || this.getProperty('plural');
+        name = this.getProperty('jsonRootMany') || this.getProperty('jsonRoot') || this.identity(true);
       } else {
         // TODO: use plural for single resource option.
-        name = this.getProperty('jsonRootSingle') || this.getProperty('jsonRoot') || this.getProperty('name');
+        name = this.getProperty('jsonRootSingle') || this.getProperty('jsonRoot') || this.identity();
       }
 
       if(meta) {

test/default-packer-spec.js

@@ -24,7 +24,9 @@ describe('DefaultPacker', function() {
     });
 
     it('should extract collection using plural name by default', function() {
-      var model = restmod.model('/api/bikes').mix('DefaultPacker');
+      var model = restmod.model().mix({
+        $config: { name: 'bike' }
+      }).mix('DefaultPacker');
 
       var many = model.$collection();
       many.$unwrap({ bikes: [{ model: 'Slash' }] });