Change Histogram to Barplot or vice versa

[upendrak]

In the 5th chapter, i see that even though the section starts with Histogram, the plot type was consistently called as geom_bar. I know that there is not much difference between barplot and histogram in ggplot. So either the section heading needs to changed from Histogram to Barplots or geom_bar needs to replaced with geom_histogram for consistency purposes.

[alexgraehl]

Good point! Just modified this to change everything to "geom_histogram"... setting up a pull request now.

[alexgraehl]

Just submitted a pull request to address this: #37