Auto merge of #2474 - sbeckeriv:add-some-flair, r=alexcrichton

Add build flair

Dearest Reviewer

I have add the travis-ci build badge to the README. I pushed the image down towards the bottom. I was thinking that most people reading the readme do not care about the build status. I have seen the badge done in different locations and with different titles. I am easy on where it goes. I added it because I found that I was looking for the status when my branch was failing. I have since learned the travis interface.

<3 Becker

<img width="415" alt="screen shot 2016-03-12 at 10 51 43 am" src="https://cloud.githubusercontent.com/assets/12170/13724615/7fe41e36-e840-11e5-8815-3ac1f13dc2fd.png">