Throw errors if axios fails

[ryanlabouve]

https://github.com/startupdotdev/forever721/pull/7/files#diff-a2a171449d862fe29692ce031981047d7ab755ae7f84c707aef80701b3ea0c80R38

Right now this would silent fail and probably give a good grade. Let's make it throw an error as a next step.