add .gender(), .birthday() and .age()
add .avatar() fallback to .photoUrl
add position()
add Facade.multi
add Facade.one()
add .websites()

also adding tests to ensure that .website() returns
a single website from .websites() when possible
.phone(): fallback to .phones[0]
add .phones()
Merge pull request #51 from segmentio/additions

add .gender(), .birthday() and .age()