CRAN installation instructions
Add y-axis label option
Add system data: corpus names and counts
Add the option to return count as well as frequency
Add try_require (borrowed from ggplot2)
Change ggplot2 and scales to Suggests
Calculate phrase counts from frequencies
Update news
ngram objects creates

* format print output of ngram data
* ggram can take either a vector or phrases or an ngram object
Suppress split of ngram print output for short data sets
Warn when smoothing > 0 for geoms other than line
Tidy formatting of date axis
Fix documentation of S3 print.ngram function
Add ngram_sample to the package data set
Call version 1.3.0
Fix error: argument changed to x but code hadn't reflected change'
Avoide argument conflict
Fix error when geom = NULL
Add sample dataset: hacker
Update to use sample dataset hacker