updated for mageia-4 final

also requires packer 0.5 onwards
added mageia-4 32bit final

requires packer 0.5 onwards
renamed to mageia 4 32bit
update README
update to latest ubuntu 14.04.4 release
Merge branch 'master' of github.com:thatsamguy/packer-templates
initial ubuntu 14.04 LTS (alpha) gold images
updated ubuntu 1204 gold name and correct url