am 6d95fc0a: docs for ESR: add docs to bluetooth explainin that discovery should be cancelled before connecting to a device

Merge commit '6d95fc0a2ca910212a43c4547c0ef000659b72dc' into eclair

* commit '6d95fc0a2ca910212a43c4547c0ef000659b72dc':
  docs for ESR: add docs to bluetooth explainin that discovery should