message: added build passing tag in readme
diff: @@ -30,3 +30,8 @@ Status and Roadmap
  - [ ] Port pdf417 format with unit and browser tests and documentation
  - [ ] Create tests for all major current browsers
  +
  +Etcetera
  +========
  +
  +[![Build Status](https://travis-ci.org/aleris/zxing-typescript.png?branch=master)](https://travis-ci.org/aleris/zxing-typescript)
  