Force .sh scripts to use LF (or as-committed) line endings, even on Windows
Merge pull request #57 from mbijon/master

Force .sh line-endings: Defensive fix for Windows provisioning script error
README refresh
Setup stable WP via latest.tar.gz from WordPress.org rather than SVN

There was no real reason to checkout the repository for the default WordPress install as that isn't meant to be switched around, but instead to be upgraded when new versions of WordPress are released. This should speed up a piece of `vagrant up` a bit.
Ignore externals on svn up for unit tests
Update README to reflect Vagrant 1.2.2 release