Add "uncomment `IconDataLight`" step to readme
Add "uncomment `IconDataLight`" step to readme

- This step is necessary since the `IconDataLight` block is now commented out by default to avoid unnecessary classes when pro icons are not installed.
- Also added myself to the contributors list - sneaky me
brianegan/font_awesome_flutter,brianegan/font_awesome_flutter,brianegan/font_awesome_flutter