message: Update README.md with correct URL
  The URL was pointing back to the old repo.
diff: A JavaScript library that detects browser capabilities from a user agent string.
  -The following keywords are supported. See [browser-capabilities.ts](https://github.com/Polymer/browser-capabilities/blob/master/src/browser-capabilities.ts) for the latest browser support matrix.
  +The following keywords are supported. See [browser-capabilities.ts](https://github.com/Polymer/tools/blob/master/packages/browser-capabilities/src/browser-capabilities.ts) for the latest browser support matrix.
  | Keyword | Description
  | :---- | :----
  