Added gamma ray counting module folders, spec and readme again.
Update spec.md

fixed formatting
Added gamma photon counting code. NB this is very much subject to testing/changing.
Create Gamma Count (BP)
Finished init development + created operational (+tested) 'working' file.
Merge branch 'gamma_count' of github.com:SPS-Balloonsat/Asgard_IV_2014 into gamma_count
Merge branch 'gamma_count'