title: Justify node text in DiagrammeR
body: <p>Does anybody know if <code>DiagrammeR</code> currently supports left- and right-justification of node labels when using GraphViz?</p>
  
  <p>Here is a quick example, where I would like to left-justify the text within both of the nodes:</p>
  
  <pre><code>library(DiagrammeR)
  grViz("
    digraph test {
      graph [fontsize = 10]
  
      node [shape = box]
      A [label = 'Foo\nBar']
      B [label = 'Bar\nFoo']
  
      A -&gt; B
    }
  ")
  </code></pre>
  
  <p>I was able to find one resource <a href="http://www.graphviz.org/content/attrs#kescString" rel="nofollow">here</a> for the native GraphViz that uses <code>/l</code> for left-justification, but when I try that within the <code>grViz</code> function I receive an error.  For example:</p>
  
  <pre><code>library(DiagrammeR)
  grViz("
  digraph test {
    graph [fontsize = 10]
  
    node [shape = box]
      A [label = 'Foo\lBar']
      B [label = 'Bar\lFoo']
  
    A -&gt; B
  }
  ")
  </code></pre>
  
  <p>I appreciate any help in advance!</p>