Merge pull request #2 from davharris/master

make xy coordinates in R, export in JSON
Merge pull request #3 from davharris/master

fix R script & json
Topic terms data files
Merge branch 'master' of https://github.com/lauren-walker/TopicViz.git
First cut at d3 code to draw ring of category labels.
Forgot to add categories.csv file.
Draw the points inside the donut and reorganize the files a bit
Rename the table file as .tsv for easy import to d3
* Rerun the R script to plot points based on the top 100 (exactly 87)
topics. 
* Draw the arcs using the Top16Terms.tab data rather than the fake
categories.csv
* Remove categories.csv
* Create a color map of 16 distinct colors and color the points and arcs
based on the color map of   category->hex value
Merge branch 'master' of https://github.com/lauren-walker/TopicViz

Conflicts:
	R/make_coordinates.R
	data/xy.json
fix .tab to .tsv