add engine.py to the scripts installed by setuptools
add engine.py to the scripts installed by setuptools

Otherwise, when Cloudeebus is installed as mentioned in the README
cloudeebus.py will fail to find engine.py at runtime.

modulexcite/cloudeebus,01org/cloudeebus,modulexcite/cloudeebus,01org/cloudeebus,01org/cloudeebus,modulexcite/cloudeebus