Add a shelf_web_socket package.

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//297593003

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/shelf_web_socket@36394 260f80e4-7a28-3924-810f-c04153c831b5
Fix shelf_web_socket's Connection handling.

R=rnystrom@google.com
BUG=21894

Review URL: https://codereview.chromium.org//810133002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/shelf_web_socket@42446 260f80e4-7a28-3924-810f-c04153c831b5
Add gitignore, status, and codereview files.
Update the pubspec's homepage link.
Properly skip tests in packages directories.