Allow dataSource === false

lib/registry.js

@@ -236,7 +236,7 @@ Registry.prototype.configureModel = function(ModelCtor, config) {
     ModelCtor.attachTo(config.dataSource);
     debug('Attached model `%s` to dataSource `%s`',
       modelName, config.dataSource.name);
-  } else if (config.dataSource === null) {
+  } else if (config.dataSource === null || config.dataSource === false) {
     debug('Model `%s` is not attached to any DataSource by configuration.',
       modelName);
   } else {

test/app.test.js

@@ -604,6 +604,10 @@ describe('app', function() {
       app.model('MyTestModel', { dataSource: null });
     });
 
+    it('accepts false dataSource', function() {
+      app.model('MyTestModel', { dataSource: false });
+    });
+
     it('should not require dataSource', function() {
       app.model('MyTestModel', {});
     });

test/loopback.test.js

@@ -310,7 +310,7 @@ describe('loopback', function() {
       });
 
       loopback.configureModel(model, {
-        dataSource: null,
+        dataSource: false,
         relations: {
           owner: {
             model: 'Application'