Fixing exposure of too much methods from the API.

Methods reset, connect, bind and bind_ports from RPCBase were exposed.
Method register from RPCServiceBase was also exposed due to a typo.
Implements a register_object function and allow for namespaces in service task names.
Merge pull request #3 from AxelVoitier/master

Fix exposures of API methods + new function register_object + namespace in task name