title: Having trouble aligning data using formattable in R
body: <p>I put my data into a data frame and now want to align the data.</p>
  <pre><code>df.obs &lt;- data.frame(Observer_Unanimous, row.names = TRUE)
  </code></pre>
  <p><img src="https://i.stack.imgur.com/lwYCa.png" alt="Basic formattable plot" /></p>
  <p>I now want to left align the first column (header), and center align the next three.</p>
  <p>Code run:</p>
  <pre><code>formattable(df.obs, align = c(&quot;1&quot;, &quot;c&quot;, &quot;c&quot;, &quot;c&quot;)) 
  
  **Error in kable(mat, format = format, align = align, escape = FALSE, ...,  : 
    'align' must be a character vector of possible values 'l', 'r', and 'c'**
  </code></pre>
  <p>Not making progess!  Any thoughts?</p>