Removing function definitions which are immediately called and only once.
Consistent style
Removed startup function which is called exactly once
Wrapped arXivKeys module and exported, to keep namespaces clean.
Modularized goto-box.
goto-box.js now installs the goto-box instead of
leaving it to arXiv-keys.js
Listed exports
First install help box, then install key handler.
Wrapped a bunch of stuff up in anonymous functions to clean namespace
No need for these functions, just run code once.
Removed empty if-else branch.
Two more pieces of run-once code
Needed /find not just /find/
Updated README.md to reflect that keys work on find pages as well