Update tests and README

Signed-off-by: Vincent Giersch <vincent.giersch@ovh.net>
Preconfigured API endpoints

Signed-off-by: Vincent Giersch <vincent.giersch@ovh.net>
Discontinue node.js <= 0.9 support

Signed-off-by: Vincent Giersch <vincent.giersch@ovh.net>