refactor/mobxAutorun/todos

[SerkanSipahi]

• clarification refactor for *mobxAutorun directive(s) in todos template
• update package.json

[SerkanSipahi]

@adamkleingit Build is failed due to something in the root package.json of mobx-angular! it has nothing to do with my pull-request!

[SvenSchoene]

Not entirely sure what is the issue here, but maybe this is helpful: https://github.com/angular/angular/issues/14595

[adamkleingit]

Thanks! merged