(minor) doc CreateImageFromMachine error code for unsupported VM OS
(minor) doc CreateImageFromMachine error code for unsupported VM OS

misterbisson/sdc-cloudapi,joyent/sdc-cloudapi,arekinath/sdc-cloudapi,KrisShannon/sdc-cloudapi,arekinath/sdc-cloudapi,KrisShannon/sdc-cloudapi,joyent/sdc-cloudapi,misterbisson/sdc-cloudapi