Updating template file name so Chef can find it
Creating dirs for centos and ubuntu in checks dir

So that way when we're looking for system-specific disk/link/memory
scripts, we can actually find them.
Printing percentage used for disk checks and DRYing scripts
[TRIVIAL] dd
Updating ubuntu memory check

The `free` command was not being correctly interperted.  The number for
'used' was the amount set aside by the kernel not the actual amount in
use.  This was updated along with adding some additional metrics