Fix marker-drag callback.
Display instructions for dragging marker.
Reset map zoom after dragging marker.
Merge branch 'master' of github.com:ajdavis/geo-paging-example

* 'master' of github.com:ajdavis/geo-paging-example:
  Added search functionality on /near page
Don't show "10009" as default search term on results page.
Add Gianfranco Palumbo as contributor.