Update README.md

Add more words around the goals of this project. I want to make it
it clear that we are not forking VeeWee templates at all, but simply
using this project as a source of documentation for rebuilds and place
to store the definitions used to build a box for the purposes of
rebuilding and so users can see what steps were followed to create the
boxes in the first place.
Update README.md

Update instructions on how to upload images.
Built new definitions based on updated veewee templates

Renamed baseboxes to fit more specific naming scheme based on discussion
with kbarber.  All other changes pushed upstream to veewee project and then
copied back here.

Unless otherwise noted, all VMs were uploaded with four different
builds:
x86_64 and i386
standard and -nocm builds

-nocm builds skip the custom Ruby, Puppet and Chef install in the veewee
build process.  As a result, veewee validation should break on four
tests when run against these boxes (ruby, gem, puppet and chef).

Operating systems now covered:
CentOS 5.9
CentOS 6.4
Debian 6.0.7
Ubuntu Server 10.04.4
Ubuntu Server 12.04.2

All definitions are taken directly from the upstream veewee definitions
(some of which we pushed ourselves) in the master branch.  Several
scripts have been inserted in the ext/ directory for copying and
transforming these basebox definitions to fit our needs.

Old definitions are available in the legacy/ directory.

Addtl: Modified .gitignore to include .DS_Store files
Created script to convert veewee templates and construct puppet versions