Installing Bodymovin

1 - Close After Effects if its open

2 - Install the ZXP installer

http://aescripts.com/learn/zxp-installer/

ZxpInstaller

3 - Download the latest bodymovin extension

https://github.com/airbnb/lottie-web/tree/master/build/extension

Bodymovin ZxpInstaller

4 - Open the ZXP installer and drag the bodymovin extension into the window

Bodymovin ZxpInstaller

5 - Open After Effects

Under the menu "Window > Extensions" you should see "Bodymovin"

Bodymovin in the menu

Now you're good to go!

More Bodymovin info

Check out information about the Bodymovin settings here
Also here is a video walkthrough of how to install and use Bodymovin here