Implement installation from package on RedHat

Node packages were recently added to EPEL: http://dl.fedoraproject.org/pub/epel/6/x86_64/.

On the side note, I noticed that the current `binary` test suite fails on CentOS because of the secure path issue (http://blogs.perl.org/users/vyacheslav_matjukhin/2013/05/usrlocalbin-rant.html).