Turnkeylinux LAMP: Getting wordpress to use ssh for plugin and theme installation

I was having to install plugins and themes manually in WordPress because I was using Turnkeylinux LAMP until I found out WordPress supports SSH out of the box which is what TurnkeyLinux comes with by default. All I had to do was install the relevant PHP SSH library:

apt-get install libssh2-php

And restart Apache

/etc/init.d/apache2 restart

and I was good to go.