Allows pxe os installations

- initial files
- gitignore
- gentoo installer
- r8168 driver
- gentoo mirror
- almost there, grub pxe working
- r8168 driver
- more grub pxe. DHCP failing...
- more grub pxe. udhcpc simple.script
- pxe boot OK RIO-59
Merge pull request #1 from objectos/rio_59_iro_eto

RIO-59: iro eto prepare