support for geom_point as an alternative to geom_tile
ggtable -- quick bar plots with ggplot2

a one-liner method to bar plots for one-way or two-way frequencies
documentation
removing ggtable from pull
Merge branch 'master' of git://github.com/briatte/ggally into ggcorr_point
documented
changed 'circle' to 'point'
fixed links in description
white space
equals to arrows
remove explicit return statement and just have 'p' as last line
documented