Setup and run tests

• Run via Grunt
  • Install dependencies; npm install;
  • Run tests in browser: grunt;
  • Run headless: grunt jasmine;

Install headless version

• node-canvas is required for headless testing.
  • Please check https://github.com/Automattic/node-canvas for install details.

Gotchas when installing node-canvas

# Is you receive this error: 
Error "Package xcb-shm was not found in the pkg-config search path." ...

# Run this
export PKG_CONFIG_PATH=/opt/X11/lib/pkgconfig:$PKG_CONFIG_PATH

# Source:
https://github.com/Homebrew/homebrew/issues/14123