Love this style of documentation - very concise, concrete usage examples with a minimal amount of code needed to reproduce.
I actually modeled the new documentation of Trianglify (http://qrohlf.com/trianglify/) on the Textures.js docs.
I don't have the numbers on hand, but subjectively the number of 'how do I do X' github issues that I deal with has gone down a lot since adopting this style of docs.