The fix for #77 (3ccfced168f5880b56ed364010fb8df5fcf1e582) incompletely
removed a workaround for a now-fixed bug in jsdom, causing all camelCase
keys to parse incorrectly from node. This commit removes the stray lines
which were casting all keys to lowercase in node.

It also updates the link to the sandbox again, because the current link
404s.