core library implementation; license fixes

- library with code/utils to be shared across other components or top
level application;
- moved MDL directive to core as an example
- license fixes

ng2-components/ng2-alfresco-core/material.js

@@ -0,0 +1,20 @@
+System.register(['./material/MaterialDesignLiteUpgradeElement'], function(exports_1, context_1) {
+    "use strict";
+    var __moduleName = context_1 && context_1.id;
+    function exportStar_1(m) {
+        var exports = {};
+        for(var n in m) {
+            if (n !== "default") exports[n] = m[n];
+        }
+        exports_1(exports);
+    }
+    return {
+        setters:[
+            function (MaterialDesignLiteUpgradeElement_1_1) {
+                exportStar_1(MaterialDesignLiteUpgradeElement_1_1);
+            }],
+        execute: function() {
+        }
+    }
+});
+//# sourceMappingURL=material.js.map