Add FAQ answer about browser support.
Add FAQ answer about browser support.

Resolves #78

michaelBenin/babel-library-boilerplate,babel/babel-library-boilerplate,pdougall1/arduino-javascript,kristianmandrup/babel-library-boilerplate,paulfalgout/babel-library-boilerplate,kristianmandrup/babel-library-boilerplate,nicksrandall/koto-starter,justengland/babel-library-boilerplate,paulfalgout/babel-library-boilerplate,babel/babel-library-boilerplate,alex-wilmer/generator-babel-boilerplate,justengland/babel-library-boilerplate,babel/generator-babel-boilerplate,joshbedo/babel-library-boilerplate,pdougall1/arduino-javascript,nicksrandall/koto-starter,jasonblanchard/babel-library-boilerplate,alex-wilmer/generator-babel-boilerplate,lanetix/generator-lanetix-script,joshbedo/babel-library-boilerplate,michaelBenin/babel-library-boilerplate,babel/generator-babel-boilerplate,jasonblanchard/babel-library-boilerplate