[2019-XX-YY] develop TODO

- changed /build folder in /font
- updated licenses for icons and fonts in README
- mentioned icon-font-generator package URL in readme

* updated svgo to 1.3.0 getting rid of "flag" using info in https://github.com/svg/svgo/issues/1137
* optimized js for creating icons header file

[2019-09-17] first import
