Update springRefs

Added REST usefull link and Spring 4 link(Anish)
Merge branch 'patch-1' of https://github.com/paragshrivastava/rethinkCollection into paragshrivastava-patch-1

Conflicts:
	springRefs
Merge pull request #3 from devendrapratapsingh/paragshrivastava-patch-1

Paragshrivastava patch 1