title: Whiteboard for angular 2
body: <p>I want to have a whiteboard in my website, where I'm developing it's front-end with angular 2, and I searched for whiteboard many times and the best thing I found is Literally Canvas but it doesn't have enough features, for example I want the whiteboard has ruler with centimeter and inch units and I want to draw different shapes likes flowers and animals and also save the result as png.</p>