initial commit for branch,
Exchange Controller
Merge branch 'master' of https://github.com/loclamor/nuit2013 into AKJB_Sprint1

Conflicts:
	grails-app/domain/nuitinfo2013/Product.groovy
	grails-app/domain/nuitinfo2013/User.groovy
few changes for Akrham
Please enter the commit message for your changes. Lines starting
purpose exchange done, waiting to test
 Please enter the commit message for your changes. Lines starting
some code review
Adding exchange function
Merge branch 'AKJB_Sprint1' into NYAN_Sprint1