Generally use strict comparisons

Codacy says to use !===, but I can't find that any such thing exists,
except as a combination of ! and ===, and !== is exactly that according
to spec.
Change scope of 'steamId'

Codacy says this is confusing. It doesn't confuse me, though.
Redefined variable

Change the name.
Another redefined variable

Reuse temp. And define next aot so codacy doesn't whine about it already
being defined.
Curly braces! WHOO!
Add code climate badge

Because badges are FUN!