Added autofoldGrammars and autofoldIgnoreGrammars
Added autofoldGrammars and autofoldIgnoreGrammars

Two new configuration options have been added that allow you to configure the autofold functionality further:

1. `autofoldGrammars` allows you to specify grammar names you *want* to autofold.
2. `autofoldIgnoreGrammars` allows you to specify grammar names you *do not want* to autofold.

robballou/atom-fold-functions,robballou/atom-fold-functions