edx-jsme is an XBlock (add on component) for the edX platform which provides a new problem type: 'Molecular Structure'. This problem type integrates the JSME molecule editor seamlessly into an edX course.
When edx-jsme is installed, a new problem type, 'Molecular Structure', is available under 'Advanced'. Once a 'Molecular Structure' problem is added to a course, the problem template itself contains instructions for editing.
This package is installed on the Python path in the normal way, eg. via a pip requirements file. Then you just need to add this app to INSTALLED_APPS for both STUDIO and the LMS:
# Add Molecular Structure problem type
INSTALLED_APPS += ('edx_jsme',)
That's it! Pretty easy.