Version 2.3.0 with several modification

Hi Valtri

Seems like you are the official mainainer now :) so here is some patch for this driver .

*added kernel support up to 3.11
*Added all the pid/vid from original ambrosa pull request and from daniviga pr
*Reorganise the pid/vid list to really support all the devices (Managed to get my ut-40 working, hope it works for all)
*Add a dirty trick in the makefile to autodetect the kernel version instead of editing manually
*rename the folder to RTL2832-driver_kernel-3.x
*Add dkms.conf
*Update the Readme
*Add a .gitignore
*Bump to Version 2.3.0