Better build option for rootfs.tar.

CMD /bin/sh is just always a better default option
Removed git from installation, just install cURL

Due to the debilitating bugs with installing git, I've decided to pull
all git installation for now and just focus on cURL to get something
working out there.
Symlinked files no longer used in busybox.

`/etc/resolv.conf` and `/sbin/init` are no longer symlinks in busybox builds
so we no longer need to overwrite them to get them to work with docker.
Updated README.md: removed git, cleaned up.
Cleaned up run.sh for cURL only image.
New rootfs.tar and md5 file for cURL only image.
Added ssl support to cURL in tarbuilder Dockerfile
Updated cURL protocols in README.md, built new tar.
Added ssh support in tarbuilder Dockerfile
Cleaned up Dockerfile for ssh only feature
Added ssh enabled tar.
Moved ssh tarmaker to own folder for flavoring. Cleaned up comments.
Added basic logic to import image for sshd.

This is currently unfinished and untested.
Changed run script to handle falvor build options
Removed Dockerfile from project root. Moved into flavor folders.
Added curl flavor build
Added base flavor.
Revamped run script to do flavor builds.
Removed old builds for old Dockerfiles
Added new working images to base and curl flavors.