doc: update TravisCI link from .org to .com

Author: jacobq

README.md

@@ -1,7 +1,7 @@
 # ember-cli-plotly
 
 [![Latest NPM release](https://img.shields.io/npm/v/ember-cli-plotly)](https://www.npmjs.com/package/ember-cli-plotly)
-[![Build Status](https://travis-ci.org/EmberMN/ember-cli-plotly.svg?branch=master)](https://travis-ci.org/EmberMN/ember-cli-plotly)
+[![Build Status](https://travis-ci.com/EmberMN/ember-cli-plotly.svg?branch=master)](https://travis-ci.com/EmberMN/ember-cli-plotly)
 [![Maintainability](https://api.codeclimate.com/v1/badges/a99a88d28ad37a79dbf6/maintainability)](https://codeclimate.com/github/codeclimate/codeclimate/maintainability)
 [![Ember Observer Score](https://emberobserver.com/badges/ember-cli-plotly.svg)](https://emberobserver.com/addons/ember-cli-plotly)
 [![Dependencies up to date](https://david-dm.org/EmberMN/ember-cli-plotly/status.svg)](https://david-dm.org/EmberMN/ember-cli-plotly)