Update jstransform version to ^7.0.0

Author: zachasme

package.json

@@ -28,7 +28,7 @@
   "dependencies": {
     "commoner": "^0.10.0",
     "esprima-fb": "^6001.1.0-dev-harmony-fb",
-    "jstransform": "^6.3.2"
+    "jstransform": "^7.0.0"
   },
   "devDependencies": {
     "benchmark": "~1.0.0",