fix geom_bar when position=dodge
remove dead code
Merge branch 'master' of https://github.com/ropensci/plotly into xsm-fix-bar-dodge
fix/modify barcharts and histograms (WIP)
Merge branch 'master' of https://github.com/ropensci/plotly into xsm-fix-bar-dodge

Conflicts:
	R/ggplotly.R
some cleanup
getting closer
Merge branch 'master' of https://github.com/ropensci/plotly into xsm-fix-bar-dodge
Merge branch 'master' of https://github.com/ropensci/plotly into xsm-fix-bar-dodge
Merge pull request #87 from ropensci/xsm-fix-bar-dodge

fix geom_bar when position=dodge