DEFAULT_WAIT_DELAY probably too big

[nonmanifold]

Individual tests are taking too long to complete, and I have to set delay to zero manualy.
Maybe it's better to set this delay to 0 by default?

[msakrejda]

+1. Alternately, is there some way to explicitly indicate to moxios that we expect all the requests to have been made instead of using a timeout? Our (default) mocha setup flags all our axios tests as taking too long, because mocha's slow test threshold is also around 100ms.

[msakrejda]

We ended up dropping moxios because of this. We've moved to mocking our axios calls with testdouble using td.replace and td.when on methods like axios.get. It's not as elegant but it's a lot faster.

[hovissimo]

Please see #48

[mzabriskie]

Fixed with #48