make ansible stream the output rather than buffering the whole ansible run
show ansi-colored output
separate formatting of the extra_vars into a separate method and fix NoMethodError by using `strip`rather than `blank?`
add support for both centos AND ubuntu, keeping the variations in the install process as small as possible
remove `ANSIBLE_DIR` which is no longer used
Merge branch 'fix-blank-nomethoderror' into all-changes
Merge branch 'centos-support' into all-changes

Conflicts:
	lib/vagrant-guest_ansible/guest_script.sh
update version to 0.0.2.dev to avoid version clash with 0.0.1
Merge pull request #6 from tknerr/all-changes

All Changes of PRs #3, #4 and #5