[installer] launch script to set the libdir and ask root
Closes #22
[installer] Remove LD path
[installer] Fix xdg-su
[installer] Use gksu iso gksudo

gksudo uses sudo, which is not available on Fedora-based
Merge pull request #32 from labsin/launchscript

[installer] launch script to set the libdir and ask root
[installer] [target] do not use cutdown firmware on RBP
[installer] [host] update README.md markdown
[installer] [target] add README.md
[installer] [target] cosmetic: silly markdown preview issue
[installer] [target] ahhhhhh forget md
[installer] Fix osmcinstaller