Typo in Options module

[sbennett33]

There is a typo in the Options module which prevents this library from working properly.

https://github.com/sascha-wolf/knigge/blob/1fb2f223b3818a1a674878ae4552a7e413d3bbf9/lib/knigge/options.ex#L83

You are trying to read opt_app from the options list instead of otp_app.

[sascha-wolf]

Damn, as it turned out the covering test didn’t run because I named it incorrectly. That's my punishment for not doing strictly TDD. 😄

It's fixed in 1.0.2 (2bd845b), thanks for the report!