gulp build: genimgs: not found

[asliwinski]

How to correctly install and build this project? When I run npm build I get:

> gulp build

[13:14:03] Using gulpfile ~/Projects/web-push-book/gulpfile.js
[13:14:03] Starting 'build'...
[13:14:03] Starting 'genimgs'...
@gauntface/html-asset-manager Error output from genimgs tool:

/bin/sh: 1: genimgs: not found

[Matt Gaunt-Seo]

Added some build instructions to the README: https://github.com/gauntface/web-push-book#building-the-site