chart-builder-demo/app/todo.md

Left to do

2. Use better DnD logic and make it directive - better logic for draggable
3. Fix pie label position logic
4. clean up css file

Done

-- 1. Make d3-tip a service -- 3. Move d3 and other src files to chart directive [Not possible directly]

Think later

5. Rename filters/services.js to actual thing name