Merge pull request #2 from RaphaelRochet/master

Fix autostart issue.
Implements renaming of the whole extension, changes in the metadata.json. Adds preferences schema and preferences dialog. Initial version.
Updated description after the bugfix.
Updated README.
Implements basic functionality for tootips on application icon folders and application search results. Not sure if the code is any good.
Merge branch 'trunk' of github.com:karlitos/Applications-overview-tooltip-NG

Conflicts:
	README.md
Make settings change real time