Kelvin-Helmholtz test documentation

[ekeever1]

Documentation for the KH test (In the form of experiments/KelvinHelmholtz/kelvinHelmholtzDoc.tex) is needed. Recommend reference to Chandrasekhar's 1960 book, "Hydrodynamic and Hydromagnetic stability".

[ekeever1]

A bare shell of 'documentation' exists but at the very least the Imogen parameters need to be given.