replace optparse with docopt for command line args#28

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hernamesbarbara wants to merge 4 commits intoglamp:masterfrom

hernamesbarbara:master

Commits on Sep 12, 2015

Commits on Sep 13, 2015

read x/y pairs from a file with or without headers
hernamesbarbara
committed

Commits on Sep 14, 2015

got rid of optparse
hernamesbarbara
committed