api-response.json

{
	"data": {
		"id": 14830193,
		"type": "twitter_connection",
		"attributes": {
			"created_at": "2015-09-15T11:19:50.201187+05:30",
			"updated_at": "2015-09-15T11:19:50.201187+05:30",
			"screen_name": "Gurpartap"
		}
	}
}

app_adapters_application.js

import DS from 'ember-data';

export default DS.JSONAPIAdapter.extend({
	host: 'http://localhost:3000',
	namespace: 'api',
	pathForType(type) {
		return Ember.String.underscore(type);
	}
});

app_models_twitter-connection.js

import DS from 'ember-data';

export default DS.Model.extend({
    createdAt: DS.attr('string'),
    updatedAt: DS.attr('string'),
    screenName: DS.attr('string')
});

app_router.js

//...

Router.map(function() {
    this.route('twitter_connection', { path: '/twitter/:twitter_id' });
});

//...

app_routes_twitter-connection.js

import Ember from 'ember';

export default Ember.Route.extend({
	model(params) {
		return this.store.findRecord('twitter_connection', params.twitter_id);
	}
});

app_serializers_twitter-connection.js

import DS from 'ember-data';

export default DS.JSONAPISerializer.extend({
	keyForAttribute(key) {
		return Ember.String.underscore(key);
	},

	keyForRelationship(key) {
		return Ember.String.underscore(key);
	}
});

app_templates_twitter-connection.hbs

<strong>{{ model.screenName }}</strong>