title: UpsetR change set name labels in graph
body: <p>I am trying to change the set name labels in my UpsetR plot (using Upset function) to be a string of multiple words.  Instead of 'A', 'B', 'C' as the set labels I want to have the set labels appear as 'A Description', 'B Description', 'C Description'. I do not want periods or underscores between the words. </p>
  
  <pre><code>test &lt;- upset(grouped_hot,
  sets= c("A Description", "B Description","C Description", "N Description"),
  nintersects = 8, 
  mb.ratio = c(0.6, 0.4),
  sets.x.label = "Number of Patients",
  sets.bar.color =  "#56B4E9", 
  mainbar.y.label = "Number of Patients",
  order.by = "freq", 
  empty.intersections = "on", 
  keep.order = FALSE,
   scale.sets = "identity", 
  att.pos = "top", 
  text.scale = c(2.5,2.5,2,1.5,2.5,2.5))
  </code></pre>
  
  <p>The actual result is that my sets on my image are labeled A.Description, B.Description and C.Description. However, I do not want the periods between the words and instead want a space. Any ideas to change the names of the Set Name Labels just for the purposes of the plot? Thank you!</p>