Suggest using itskyedo/woff2-encoder instead of fontello/wawoff2 for decompressing woff2 files

[SarcevicAntonio]

Description

Updating the README to suggest to use itskyedo/woff2-encoder instead of fontello/wawoff2 for decompressing and parsing woff2 font files. I also chose to dramatically simplify the example code, since I found it hard to follow for just a simple example.

Motivation and Context

Since I spend a good chunk of yesterday trying to get fontello/wawoff2 (and similar libraries) working without luck in modern browsers, I wanted to share the library that finally "just worked" for me.

How Has This Been Tested?

Here is a JSREPL demonstrating that the example code works: https://jsrepl.io/repl/vcqrshb69b0

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Readme update

Checklist:

• I did npm run test and all tests passed green (including code styling checks).
• I have added tests to cover my changes.
• My change requires a change to the documentation.
• I have updated the README accordingly.
• I have read the Contribute README section.