Example code doesn't work

Trying to use an external package with Swift for the first time, so maybe it's just my lack of experience...

I figured out how to add the package (with help from bug #1 ) , but the code as written causes:
`error: cannot find 'Vec2' in scope graphics.draw(Text("Test", at: Vec2(x: 0, y: 15)))`

If I need another library, including the imports explicitly in the example might be useful for others.