title: Supress message after running draw.pairwise.venn
body: <p>I am using the function <code>draw.pairwise.venn</code> from the package <code>VennDiagram</code> to create a markdown document with Rstudio. When I knit the document into <code>html</code> I see a similar message for every Venn diagram:</p>
  <p><code>(polygon[GRID.polygon.118], polygon[GRID.polygon.119], polygon[GRID.polygon.120], polygon[GRID.polygon.121], text[GRID.text.122], text[GRID.text.123], text[GRID.text.124], text[GRID.text.125], text[GRID.text.126]) </code></p>
  <p>This does not go away if I set <code>message = FALSE</code></p>
  <p>How could I get only the Venn diagram in the final <code>html</code> without such message?</p>