Add Configuration for Travis and badge to README

This adds configuration for Travis and badge for the README. Travis is a CI (continuous integration) server that will automatically run your tests every time you push to Github.

To complete the setup, @AlexPatriquin, you'll have to do the following things:

### Step one: Sign in to Travis

To get started with Travis CI, sign in with your GitHub account. Go to Travis CI and follow the Sign In link at the top.

Note that on https://travis-ci.org, you'll currently only see your public repositories, whereas on https://travis-ci.com, you can find your private projects.

While signing in, GitHub will ask you for a set of access permissions on our behalf. We've outlined them and their use in more detail.

### Step two: Activate GitHub Webhook #

Once you're signed in, and we've initially synchronized your repositories from GitHub, go to your profile page for open source or for your private projects.

You'll see all the organizations you're a member of and all the repositories you have access to. The ones you have administrative access to are the ones you can enable the service hook for.

Flip switch to on for all repositories you'd like to enable.

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From there, since I already added a `travis.yml` file when you push to Github, it'll automatically trigger a build.