title: Adding title and sub title to Venn Diagram
body: <p>I am trying to add a main and sub title to my venn diagram that I created using the following code in R. I have read through the R ‘VennDiagram’ package documentation without success.  I've also tried using gird.arrange() with a textGrob and the graph from the resulting code, but received an error stating that all inputs must be grobs.</p>
  
  <pre><code>require(VennDiagram)
  
  draw.triple.venn(
    area1 = 396,
    area2 = 273,
    area3 = 147,
    n12 = 266,
    n23 = 86,
    n13 = 143,
    n123 = 83,
    category = c("Study", "Work", "Play"),
    fill = c("blue", "red", "green"),
    euler.d=TRUE,
    scaled=TRUE
  )
  </code></pre>