Minor modifications to the tests.

Conflicts:
	tests/rpc_mixins.py
Forbid register and register_object to register a function with a Netcall reserved function name.

Conflicts:
	netcall/service.py
	tests/rpc_mixins.py
More precise debug logging.

Conflicts:
	netcall/client.py
	netcall/green/client.py
	netcall/green/service.py
	netcall/service.py
Update README with information about yield-generators.
removed the bitdeli badge from README
Adding myself as author wherever I made significant contribution ;).

Conflicts:
	netcall/client.py
	netcall/service.py
Fixing typos.
Add support for yield-generator over RPC.

All generator features are supported: next(), send(), throw() and close().

Conflicts:
	netcall/client.py
	netcall/green/client.py
	netcall/green/service.py
	netcall/service.py
	tests/rpc_mixins.py
Add generators functionality to the threading part.
Cosmetic changes on gevent part.
Merge branch 'upstream/master'

Conflicts:
	README.md
	netcall/green/client.py
	netcall/green/service.py
	netcall/threading/client.py
	tests/base.py
Merge pull request #6 from AxelVoitier/generators-merge

Generators for threading
Deduplications of common parts.

Also, re-spliting base.py into base_service.py and base_client.py. They were getting huge and most of the protocol part happens in here now.
Merge pull request #7 from AxelVoitier/generators-merge

Deduplications of common parts.
bring back distinct self.logger for clients and services
cosmetic