update broken link pykcharts and add new earthjs.js

[earthjs]

pykcharts

new domain: https://pykih.com/products/pykCharts

earthjs.js

Easy building orthographic globe, using D3v4 with SVG, Canvas & WebGL(Threejs) github project & some example show in these links:

• https://github.com/earthjs/earthjs
• https://earthjs.github.io/05-threejs/03-3d-globe.html
• https://earthjs.github.io/05-threejs/01-flight_2b_.html
• https://earthjs.github.io/06-3js-demo/03-small_arms_.html