The repository contains the files:
ash_word_cloud.R is an R script which analyses the data and produces the word cloud as an R plot.
wordcloud_data.js is the data in Javascript format (a pair of lists)
wordlcloud_script.js contains the drawing and interactivity code
wordcloud.html is the html code (just a canvas)
The files are put together in wordcloud2.html which is currently in rtrvale.github.io/pages