feat(scopes) Add support and test for several scopes specifying the same include…

… model. Add $ to a couple of comparators in docs

lib/model.js

@@ -511,16 +511,15 @@ module.exports = (function() {
    *     complexFunction: function(email, accessLevel) {
    *       return {
    *         where: {
-               email: {
-                 $like: email
-               },
-               accesss_level {
-                $gte: accessLevel
-               }
-              }
-            }
+   *           email: {
+   *             $like: email
+   *           },
+   *           accesss_level {
+   *             $gte: accessLevel
+   *           }
+   *         }
    *       }
-   *     },
+   *     }
    *   }
    * })
    * ```

test/integration/model/scope/associations.test.js

@@ -88,7 +88,7 @@ describe(Support.getTestDialectTeaser('Model'), function() {
             this.Company.create({ id: 2, active: false}),
             this.ScopeMe.create({ id: 5, username: 'bob', email: 'bob@foobar.com', access_level: 1, other_value: 9, parent_id: 5}),
           ]);
-        }).spread(function (u1, u2, u3, u4, c1, c2, u5, proj1, prof1) {
+        }).spread(function (u1, u2, u3, u4, c1, c2, u5) {
           return Promise.all([
             c1.setUsers([u1, u2, u3, u4]),
             c2.setUsers([u5]),

test/unit/model/scope.test.js

@@ -77,7 +77,7 @@ describe(Support.getTestDialectTeaser('Model'), function() {
       expect(Company.scope('somethingTrue', 'somethingFalse').$scope).to.deep.equal({
         where: {
           something: false,
-          somethingElse: 'cat'
+          somethingElse: 42
         },
         limit: 5
       });