update comments
update comments

also changes the file_exist? signature since in ruby that only ever
takes one arg.

Signed-off-by: Lamont Granquist <0ab8dc438f73addc98d9ad5925ec8f2b97991703@scriptkiddie.org>

higanworks/chef,tas50/chef-1,mattray/chef,mwrock/chef,mwrock/chef,MsysTechnologiesllc/chef,gene1wood/chef,mattray/chef,jaymzh/chef,MsysTechnologiesllc/chef,chef/chef,mattray/chef,nvwls/chef,nvwls/chef,gene1wood/chef,nvwls/chef,tas50/chef-1,tas50/chef-1,jaymzh/chef,tas50/chef-1,mwrock/chef,mwrock/chef,mattray/chef,chef/chef,MsysTechnologiesllc/chef,jaymzh/chef,higanworks/chef,mattray/chef,chef/chef,nvwls/chef,gene1wood/chef,chef/chef,higanworks/chef,nvwls/chef,higanworks/chef,higanworks/chef,gene1wood/chef,jaymzh/chef,MsysTechnologiesllc/chef,nvwls/chef