Version bump to 2.1.3
Version bump to 2.1.4 (for development)
Adds ability to specifie user/group for install files

Signed-off-by: Christophe Courtaut <christophe.courtaut@gmail.com>
Uses tar cookbook instead of command to extract WP

Signed-off-by: Christophe Courtaut <christophe.courtaut@gmail.com>