DWT repository moved to github

[kntroh]

== Quote from Jacob Carlborg (doob at me.com)'s article
> I've merged your commits now. It says that you are the author and I am
> the committer, I hope that's ok. You can now merge from upstream to get
> the latest changes.

I cloned DWT from github. Then I ran this command.
> git submodule update --init
It failed. Submodules didn't become latest version.

Then I tried this command.
> git submodule foreach git pull origin master
It was successful. I builded my application with DWT.
That's ok.
But, is it right command?