Add dual MIT + SDK license

package.json

@@ -58,11 +58,11 @@
         "c9"
     ],
     "c9plugins": {
-        "c9.ide.language": "#d1715f958f",
+        "c9.ide.language": "#0e86345d39",
         "c9.ide.language.core": "#10a225e77d",
         "c9.ide.language.css": "#46ad561506",
         "c9.ide.language.generic": "#b47cbe58f9",
-        "c9.ide.language.html": "#8e990755bb",
+        "c9.ide.language.html": "#cdc3960225",
         "c9.ide.language.html.diff": "#7d6cecfb90",
         "c9.ide.language.javascript": "#b82f16e56a",
         "c9.ide.language.javascript.immediate": "#82c426dbca",