BREAKING CHANGE: Removing the `ng init` & `ng update` commands because their current implementation causes more problems than it solves. Once RC is released, we won't need to use those to update anymore as the step will be as simple as installing the latest version of the CLI.
This commit changes 2 things:
1. Changes remaining angular-cli package references to @angular/cli.
2. Where angular-cli was mentioned as a project name, it's been changed
to Angular CLI.
Where angular-cli was meant to mean the repository name, it's been left
unchanged.
