Install as any regular plugin, either through the market or by downloading the plugin, unzipping and activating it.
Included libraries
It includes the Masonry Layout plugin version 3.2.2 and the ImagesLoaded library version v3.1.8 both with MIT License.
To use, just drag the component to any available area, then you can start adding image components by just clicking inside the selected area. There are some simple configuration options available for each widget, you can specify the columns width, the gutter (separation space between each column) and indicate if the grid should try to use all the available space (mainly centering the content and controlling the gutter automatically).