Adding citation to new Piwowar paper on open data citation advantage
Adding a figure legend
Merge pull request #58 from dmcglinn/master

Minor edits for grammer and clarity throughout manuscript
Merge pull request #57 from ethanwhite/figure-legend

Adding a figure legend
Merge pull request #56 from ethanwhite/add-piwowar-2013

Adding citation to new Piwowar paper on open data citation advantage
Remove stray 0 from the Palmer et al reference
Make formatting of e.g., consistient in the manuscript. Small stylistic changes to the Licensing section