Not so long ago I remember a very informal conversation that went something like this:
> @matanlurey: I wish I could pass `--dev` or something to `flutter` to run from source.
>
> @christopherfujino: I get what you want, but I don't want to overload the tool with more dev-only things. I would consider a script like `flutter-dev` that does that thing, though.
>
> @matanlurey: Cool, I might send a PR!
So uh, here it is 6-9 months later. Suggestions welcome.
