Removed Build/Auto Scripts. Small Restructure.

Remove Build/Auto Scripts as they were only compatible with
debian based distributions. Restructured package-lists slightly,
seperating desktop-environment packages from the main kali group.
Renamed old 'README' to 'BUGS', more appropriate to its content, and
also added a git-friendly, more descriptive ReadMe, gives a brief
description of both Kali-Linux (Links included) and this customized
version.
Added new auto scripts.
Added Primary Build Script.

Add Primary build script, the main interface to building the
live-images. If available, will use 'squid' as a caching proxy, which
is more portable than apt-cacher-ng (which afaik does NOT work properly
on current ArchLinux releases). Uses a custom config & dirs for squid so
it shouldn't interfere with any regular setup installed.
Fixed squid config to correctly allow b43 firmware download/cache.
Fix & Update build script.

Fixed bug in build script where squid would not be able to find config
file if an error occured in build. Updated to allow cache clearing from
build script.
Small build script fix, removed --purge from normal rotation.
Fixed typo in output image name & extended .gitignore
Merge branch 'dev'