Fix bug, get_access_token return a tuple, not an object.

[aymericderbois]

Hi

In oauth/getaccesstoken.py,

token = auth.get_access_token(verifier=pin)
print 'Access token:'
print '  Key: %s' % token.key
print '  Secret: %s' % token.secret

This exemple doesn't work because get_access_token return a tuple, not an object.

:)