Allow configuration

[oscarryz]

I would like to be able to configure what elements to fold and what left untouched. For instance I would like to disable folding for collection.add

The plugin while very useful to read code (specially someone other people's code) feel intrusive when I'm writing new code. Sometimes I introduce a bug and while trying to review it I find my self constantly clicking on the folded code to expand it to double check if my logic is correct.