'big-integer' should be dependency

[Aidan Delaney]

Hi,
I'm using a purescript module that depends on your purescript-bigints. Somewhere along the line, on a clean install, I'm missing the npm big-integer package. I guess that purescript-bigints depends on having the underlying 'big-integer' package installed? If so, it may be useful to list it as a dependency.

[David Peter]

big-integer is listed as an npm dependency:
https://github.com/sharkdp/purescript-bigints/blob/950bce2a4fda32fcfdc0dbb0a8597983c8a56ee4/package.json#L6-L8

It needs to be included via NPM, it does not work via bower (see README).