added doc/Melchior_1991_about_ellipticity_see_in_particular_page77.pdf and doc/map_projections_Geomatics_Guidance_Note_number7_part2_June2013_geographic_geocentric_conversion_pages_94_and_95.pdf
Merge pull request #56 from komatits/devel

added doc/Melchior_1991_about_ellipticity_see_in_particular_page77.pdf a...