Move ohif:metadata into ohif:core

Packages/ohif-core/client/metadata.js

@@ -0,0 +1,11 @@
+import { OHIF } from 'meteor/ohif:core';
+import { metadata } from '/client/classes/metadata/';
+
+/**
+ * Append Metadata namespace to OHIF namespace...
+ */
+
+OHIF.metadata = metadata;
+
+export { metadata };
+