OpenCMISS user documentation

• 1. OpenCMISS concepts
• 2. Coordinate Systems
• 3. Basis Functions
• 4. Regions
• 5. Problems
• 6. Getting started with OpenCMISS
• 7. Using OpenCMISS from Python
• 8. Using CellML in OpenCMISS
• 9. OpenCMISS tutorial videos
• 10. Tutorial: Version Control With Git