How do I make Crashplan start automatically?

New Ubuntu 16.04.1 user, and so far very happy about it.

One thing I do have a problem with, is starting Crashplan when Ubuntu boots.

It's installed.
I can start it manually.
How do I make it start automatically?

As I understand it, I need to add something to /etc/init.d.

But what do I need to add and how do I add it to /etc/init.d?

Hope you can help. Great experience so far, using Ubuntu as my primary desktop OS :)

To augment the other answer, if you prefer a GUI approach, simply type Startup in the Dash and click on the Startup Applications icon. This window will appear. (Contents of window will vary from system to system).

Click the Add button, enter a descriptive name and the command into the appropriate boxes. Add a comment if you wish. Then click the add button. The new startup command will appear in the list.

Some applications require a delay before starting, such as ones that depend on the desktop, such as Conky. If your application is one of these, you can add a delay in seconds by adding -p 20 (for a 20 second delay) after your command. Change the number for the delay value you need.