title: How do I customize the margin and label settings with plot_grid?
body: <p>I would like to have the title not be chopped off and have the axis labels removed from this chart that I generated with plot_grid from cowplot.<a href="https://i.stack.imgur.com/TJSn9.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/TJSn9.jpg" alt="enter image description here"></a></p>
  
  <p>Here is my code</p>
  
  <pre><code>    data(mtcars)
   library(ggplot2)
   library(cowplot)
   mpg = ggplot() +
   geom_boxplot(aes(y = mpg,x = as.factor(cyl)),data=mtcars) +
   coord_flip()
   am=ggplot() +
   geom_boxplot(aes(y = mpg,x = as.factor(am)),data=mtcars) +
   coord_flip()
   vs=ggplot() +
   geom_boxplot(aes(y = mpg,x = as.factor(vs)),data=mtcars) +
   coord_flip()
   gear = ggplot() +
   geom_boxplot(aes(y = mpg,x = as.factor(gear)),data=mtcars) +
   coord_flip()
   p=plot_grid(mpg,am,vs,gear, labels = "Variables effecting Mileage", label_size = 14, hjust = -0.5,
   + vjust = 0.5)+theme_grey()
  p
  </code></pre>
  
  <p>Also, if it would be simpler to create this without cowplot, what do you suggest?</p>