minor additions
Merge branch 'master' of https://github.com/ajhub1/s2plot
Merge branch 'master' of https://github.com/ajhub1/s2plot
Merge branch 'master' of https://github.com/ajhub1/s2plot
Merge branch 'master' of https://github.com/ajhub1/s2plot
fixed typos, compiles and links now