This asset gives you an opportunity to shake game scene camera whenever you want. You can set preferred shaking duration and magnitude. Camera can be shaken whenever you want, also you can enable this asset from any script (video file contains an example of doing that). You can also set camera's shaking infinite duration, so it'll always work, while your scene is active. You can use this asset for example making earthquakes, storms etc.
Camera Shaking asset also includes Play On Awake property, which gives you an opportunity to play it in the very start of your game scene. Easy and fast integration will save some time for you.