Adding thermodynamic functions
Merge branch 'master' of github.com:UCL/LatBo.jl

* 'master' of github.com:UCL/LatBo.jl:
  Generalised the index calculation
  Addition of collision and equilibrium calculations
  Calculate indices for streaming
  subscript s character not accepted outside macs
  ignoring extra files
  Corrected Geometry Test

Conflicts:
	src/LatBo.jl
	test/runtests.jl