update doc for moving home
* update the logrotate files
* remove patches for /etc/init.d/gitlab, as this works now in 6.5.0
* update the header numbers
* move the directory to more a descriptive name, and renamed file to README.md
Update the doc further
* made all the preformats to be bash
* Capitalise the first words
* Fixed a few typos
Merge branch 'master' of /mnt/ebs/repositories/arifali1/gitlab-recipes
Centos guide to be on par with official guide
Merge branch 'master' of github.com:gitlabhq/gitlab-recipes
 Merge branch 'update_centos' into 'master'

Centos guide now follows GitLab official guide.

Closes #2 #3 #4