1) Update README describing the QEMU version required for e1000, where to download the UEFI drivers for e1000, and how to enable network drivers in the platform firmware
2) Update DSC/FDF files NETWORK_ENABLE switch to enable e1000 and network driver support
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10697 6f19259b-4bc3-4df7-8a09-765794883524