composer/composer — pull request #2950 by jakoch (2014-04-30 10:16:48+00:00)
Title: reduce commit history of git checkout

this results in a smaller and faster checkout on travis.

![reduce-composer-checkout-size](https://cloud.githubusercontent.com/assets/85608/2840078/a855863a-d04f-11e3-9ee2-df4d94783b27.jpg)