title: Waffle & font family not found in Windows font database
body: <p>I am trying to get the folowing code to work so that it will display the glyph medkit or any other icons from the FontAwesome font inside my waffle plot.</p>
  
  <pre><code>library(waffle)
  library(extrafont)
  
  font_import()
  
  
  loadfonts(device = "postscript")
  </code></pre>
  
  <p>which does display Registering font with R using postscriptFonts(): FontAwesome</p>
  
  <pre><code>parts &lt;- c(`Un-breached\nUS Population`=(318-11-79), `Premera`=11, `Anthem`=79)
  
  waffle(parts/10, rows=3, colors=c("#969696", "#1879bf", "#009bda"),
     use_glyph="medkit", size=8)
  </code></pre>
  
  <p>When I run waffle I get the following errors:</p>
  
  <p>Warning messages:</p>
  
  <pre><code>1: Removed 3 rows containing missing values (geom_text).
  
  2: In grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,  :
  font family not found in Windows font database
  </code></pre>
  
  <p>I just get a plot with boxes missing the icon inside them. What am I missing in my install of fontawesome or in my work inside RStudio?</p>