readme: joyentcloud.com is deprecated, use joyent.com.
readme: joyentcloud.com is deprecated, use joyent.com.

- JPC-1754.
- Standardize on 'us-east-1' as default DC/AZ.

arekinath/node-smartdc,joyent/node-smartdc,dan-luk/node-smartdc,andyYatskov/node-smartdc,13W/node-smartdc