Repository#info might raise an exception since its an API call and needs to be handled.

[Repository#info](https://github.com/joshsoftware/code-curiosity/blob/master/app/models/repository.rb#L55) calls Github API to get repository information. These might raise any exception like Github::Error::Forbidden incase of rate limit hitting or Github::Error::NotFound if the repository is not found. Since this method is used in [UserReposJob](https://github.com/joshsoftware/code-curiosity/blob/master/app/jobs/user_repos_job.rb#L39), where we retrieve and persist the user's repositories, this might crash. Currently in development, in case of any exception, the job fails without warnings, aborting checking and persisting the [other](https://github.com/joshsoftware/code-curiosity/blob/master/app/jobs/user_repos_job.rb#L15) retrieved repositories.

Same for [Commit#info](https://github.com/joshsoftware/code-curiosity/blob/master/app/models/commit.rb#L43)