function-args.el (fa-insert-method): new custom

* function-args.el (moo-action-insert): Improve.

Fix #3 using (setq fa-insert-method 'name-and-parens-and-hint)
function-args.el (fa-tfunction->fal): fix doc.

It was messing with indent engine.
function-args.el (fa-tfunction->fal): simplify
function-args.el (fa-tfunction->fal): simplify
function-args.el (moo-action-insert): improve
function-args.el (fa-tfunction->fal): improve