Added missing license headers

git-svn-id: http://svn.apache.org/repos/asf/rave/trunk@1552383 13f79535-47bb-0310-9956-ffa450edef68
Added missing license headers to mongodb package

git-svn-id: http://svn.apache.org/repos/asf/rave/trunk@1552384 13f79535-47bb-0310-9956-ffa450edef68
UPdated LICENCE to reflect r.js and added MIT header to r.js

git-svn-id: http://svn.apache.org/repos/asf/rave/trunk@1552406 13f79535-47bb-0310-9956-ffa450edef68