Fix comments and comments formatting and names

Pearsons not persons
Replace exotic ascii characters that dont render in git gui
Make nomenclature of Manders' split coefficients consistent
Add a little detail to the readme.md
Add @author params to Coloc_2 class.

Signed-off-by: daniel j. white <dan@chalkie.org.uk>

Conflicts:
src/main/java/algorithms/MandersColocalization.java