Incorrect documentation for position_beeswarm and position_quasirandom

[KarinaMarks]

Hello,

Thanks for your package.

I have noticed in the documentation for the position_* functions that they imply the functions make violin plots. This is not true, as the geom="violin" or geom_violin determine this.

These functions are just allowing the position argument within other geom_* functions to be set as one of these position_* functions to offset the points/text/info to avoid overlapping. It would be useful to update the documentation to avoid confusion here.

Also, the example no longer works as mentioned in #45 the position argument is deprecated from ggplot2::qplot.

Thanks, Karina

[eclarke]

fixed in #63