Migrating your beta REST service client to work with release 2.0.0

Version 2.0.0 has been short-lived and has now been replaced with version 3.0.0 Between 2.0.0 and 3.0.0, the output for the REST endpoints has changed but any other functionalities are identical.

Please refer to the 1.0 to 3.0 migration guide for more information: https://github.com/Ensembl/ensembl-rest/wiki/1.0-To-3.0-Migration