CHeck the existence of pyzwave module and the pyzwave.getDeviceType function. If the function is not available, ask users to install the pyzwwave module.
Merge branch 'develop' of github.com:wukong-m2m/wukong-darjeeling into develop
The component list is created correctly now. However, since we display the component ID, it will be hard to distinguish one from others. Please check issue #79 for the details.