Remove some trailing white space in provision.sh
Allow src.wordpress-develop.dev and build.wordpress-develop.dev to share the same database by overriding the Site URL in the DB with the constant, when accessing http://build.wordpress-develop.dev/

Fixes https://github.com/10up/varying-vagrant-vagrants/issues/225
Merge pull request #227 from TobiasBg/fix-src-build

Fix varying-vagrant-vagrants #225
Update README to indicate support for Vagrant 1.4.0