Add mirage addon generated files

Author: bjornharrtell

mirage/config.js

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+export default function() {
+
+    // These comments are here to help you get started. Feel free to delete them.
+
+    /*
+        Config (with defaults).
+
+        Note: these only affect routes defined *after* them!
+    */
+
+    // this.urlPrefix = '';    // make this `http://localhost:8080`, for example, if your API is on a different server
+    // this.namespace = '';    // make this `api`, for example, if your API is namespaced
+    // this.timing = 400;      // delay for each request, automatically set to 0 during testing
+
+    /*
+        Shorthand cheatsheet:
+
+        this.get('/posts');
+        this.post('/posts');
+        this.get('/posts/:id');
+        this.put('/posts/:id'); // or this.patch
+        this.del('/posts/:id');
+
+        http://www.ember-cli-mirage.com/docs/v0.2.x/shorthands/
+    */
+}

mirage/scenarios/default.js

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+export default function(/* server */) {
+
+    /*
+        Seed your development database using your factories.
+        This data will not be loaded in your tests.
+
+        Make sure to define a factory for each model you want to create.
+    */
+
+    // server.createList('post', 10);
+}

mirage/serializers/application.js

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+import { JSONAPISerializer } from 'ember-cli-mirage';
+
+export default JSONAPISerializer.extend({
+});