Updated knownIssues to reflect the current state

Modified the logic for clearing a todo item to use delete and backspace. This is required because the spec does not dictate the initial cursor position when a todo item enters into edit mode.
Merge pull request #1000 from ColinEberhardt/master

Updates based on a full run of the browser tests
remove `derby` from website for now

as the hosted version is gone

https://github.com/tastejs/todomvc/issues/546
Add ampersand.js