Transition States notebook needs breaking down (and removal of carmm dependence at start)

[logsdail]

The transitions states notebook is a bit overwelming. It might help to make a directory with several notebooks explaining how to do the transition state sampling. The dependence on carmm for a structure (just use original ASE code, perhaps) also needs removing.

This is a relatively high dependence as this is a good notebook to aid new starters in the group.

[logsdail]

These have been pulled out as outstanding issues:

• discuss indices in input structures (CO2 as example, avoid rotation during neb
• discuss symmetry operations (where possible) to reduce path size
• discuss difficult energy landscape, optimisations of local minima, dissociation with fixed bond lengths