2. Fixed bug: post-receive file was not added when create project via admin

Merge branch 'nicer_commit_headers' of https://github.com/arthurschreiber/gitlabhq into arthurschreiber-nicer_commit_headers

If libyaml headers are not installed, YAML will not be correctly compiled (either not at all, or using Syck instead of Psych).

The indents errors of pre blocks in haml

Fix install instructions' echo missing -e flag

Needed to expand the \n into a newline. My bad.