title: Order a data frame in a list
body: <p>If I have a list of data frames  </p>
  
  <pre><code>list.dfs &lt;- list(df1 = data.frame(var1 = c(1:3), var2 = c(1:3), var3 = c(1:3)), 
        df2 = data.frame(var1= c(1:3), var2 = c(1:3), var3 = c(1:3)), 
        df3 = data.frame(var1= c(1:3), var2 = c(1:3), var3 = c(3:1)))
  </code></pre>
  
  <p>How do I use <code>lapply</code> and order to sort every data frame in the list by <code>var3</code> (lowest to highest)</p>