First test implementation
Update README.md
Fixed some issues and deprecated record_upload/record_create on OrientDB < 2.0
Implemented Protocol 28 without token

Merge branch 'master' into test_protocol_27

Conflicts:
	pyorient/constants.py
	pyorient/messages/database.py
Updated to version 1.2.3 - OrientDB 2.0-rc1 support
DECIMAL properties are typecasted to int #37

Fixed
Update README.md