add Number Lookup resource

lib/resources/NumberLookup.js

@@ -0,0 +1,8 @@
+'use strict';
+
+var TelnyxResource = require('../TelnyxResource');
+
+module.exports = TelnyxResource.extend({
+  path: 'number_lookup',
+  includeBasic: ['retrieve'],
+});

lib/telnyx.js

@@ -64,7 +64,8 @@ var resources = {
   PhoneNumbersInboundChannels: require('./resources/PhoneNumbersInboundChannels'),
   OtaUpdates: require('./resources/OtaUpdates'),
   MobileOperatorNetworks: require('./resources/MobileOperatorNetworks'),
-  SimCardGroups: require('./resources/SimCardGroups')
+  SimCardGroups: require('./resources/SimCardGroups'),
+  NumberLookup: require('./resources/NumberLookup')
 };
 
 Telnyx.TelnyxResource = require('./TelnyxResource');

test/resources/NumberLookup.spec.js

@@ -0,0 +1,19 @@
+'use strict';
+
+var telnyx = require('../../testUtils').getTelnyxMock();
+var expect = require('chai').expect;
+
+describe('NumberLookup Resource', function () {
+  describe('retrieve', function () {
+    it('Sends the correct request', function () {
+      return telnyx.numberLookup.retrieve('+18665552368').then(function (response) {
+        expect(response.data).to.include({record_type: 'number_lookup'});
+        expect(response.data).to.have.property('country_code');
+        expect(response.data).to.have.property('fraud');
+        expect(response.data).to.have.property('phone_number');
+        expect(response.data).to.have.property('national_format');
+        expect(response.data).to.have.property('portability');
+      });
+    });
+  });
+});