Automatically install dependencies instead of just logging them being missing

Add something like Laravel Mix's verify method to handle install missing dependencies instead of just logging about them being missing.

Method:
https://github.com/JeffreyWay/laravel-mix/blob/a7daff4c4d711bd064cd8729ba591c08538707fc/src/Verify.js#L57-L82

Usage:
https://github.com/JeffreyWay/laravel-mix/blob/329ed0ccffb51d52111ec11359f2617c528c60c0/src/Api.js#L32-L35