Annoyances in the QMLLive examples and docs

As mentioned on email:
 

• there is an qmllive example in the wrong folder (should be in
  /Qt/examples, but it is in /Qt/5.12.0/compiler/examples) and is provided
  as a binary, the source code for this is missing
• this app examples doesn't have any documentation
• The other example has documentation, but is not installed