feat(gecko): Improve error message when Github api limit reached. (#217)
feat(gecko): Improve error message when Github api limit reached. (#217)

When the Github API limit is reached, the error message now directly informs
the user.  Also, when any other failure occurs the status code is reported.

This should hopefully give more info for issue #216.
angular/webdriver-manager,chrisgedrim/webdriver-manager,angular/webdriver-manager,chrisgedrim/webdriver-manager