Include Arch Linux install instructions, other refinements.
Include Arch Linux install instructions, other refinements.

A global install of coffee-script is probably not needed.

I have had issues before with a https_proxy envvar being set.
Cannot reproduce, but including just in case.

Line-wraps at 80 symbols.

buttercoin/buttercoin,bankonme/buttercoin,buttercoin/buttercoin-engine,buttercoin/buttercoin,bankonme/buttercoin,eXcomm/buttercoin,eXcomm/buttercoin