updated vignette

vignettes/timmysDensity_vignette.Rmd

@@ -3,6 +3,12 @@
 %\VignetteIndexEntry{Tim Horton's Density in Canada}
 -->
 
+# Tim Hortons Density
+
+Inspired by this [post](http://www.ifweassume.com/2012/10/the-united-states-of-starbucks.html), I wanted to examine the locations and density of Tim Hortons restaurants in Canada. Using Stats Canada data, each census tract is queried on Foursquare for Tims locations.
+
+## Setup
+
 ```{r dataOpts, message=FALSE}
 options(stringsAsFactors=F)
 require(timmysDensity)
@@ -12,11 +18,6 @@ require(ggplot2)
 require(geosphere)
 ```
 
-
-# Tim Hortons Density
-
-Inspired by this [post](http://www.ifweassume.com/2012/10/the-united-states-of-starbucks.html), I wanted to examine the locations and density of Tim Hortons restaurants in Canada. Using Stats Canada data, each census tract is queried on Foursquare for Tims locations.
-
 ## Statistics Canada Census Data
 
 The actual Statistics Canada data at the dissemination block level can be downloaded from [here](http://www.data.gc.ca/default.asp?lang=En&n=5175A6F0-1&xsl=datacataloguerecord&metaxsl=datacataloguerecord&formid=C87D5FDD-00E6-41A0-B5BA-E8E41B521ED0). You will want to download the Excel format, read it, and then save it as either tab-delimited or CSV using a non-standard delimiter, I used a semi-colon (;).