thoughtbot/laptop — pull request #130 by pbrisbin (2013-08-30 15:02:06+00:00)
Title: Fix invalid conditional in mac/zsh-fix

In the process, I rewrote bin/build a little bit. echo without the -e
was printing a literal "\n" into the generated scripts.

Since the build script is `sh` and `echo -e` is not portable, I changed
them all to `printf` calls. While there, I addressed a few other total
nit picks.