Retrieved associated endpoints with given token

Handling Identity endpoint-list using specified token #58
According to Identity API Specification [1], endpoints should be returned with following request:
GET v2.0/tokens/{tokenId}/endpoints
[1]http://api.openstack.org/api-ref-identity.html#identity-v2
Merge pull request #78 from anil-kumbhar/token-get-endpoints

Retrieved associated endpoints with given token