Make bin/jsx --version output the React version according to package.json.

Closes #329.

bin/jsx

@@ -1,10 +1,13 @@
 #!/usr/bin/env node
+// -*- mode: js -*-
 "use strict";
 
 var visitors = require('../vendor/fbtransform/visitors').transformVisitors;
 var transform = require('jstransform').transform;
 
-require("commoner").resolve(function(id) {
+require("commoner").version(
+  require("../package.json").version
+).resolve(function(id) {
   return this.readModuleP(id);
 }).process(function(id, source) {
   // This is where JSX, ES6, etc. desugaring happens.

bin/jsx-internal

@@ -1,11 +1,14 @@
 #!/usr/bin/env node
+// -*- mode: js -*-
 "use strict";
 
 var visitors = require('../vendor/fbtransform/visitors').transformVisitors;
 var transform = require('jstransform').transform;
 var propagate = require("../vendor/constants").propagate;
 
-require("commoner").resolve(function(id) {
+require("commoner").version(
+  require("../package.json").version
+).resolve(function(id) {
   var context = this;
 
   // Note that the result of context.getProvidedP() is cached for the

package.json

@@ -36,7 +36,7 @@
     "test": "grunt build && grunt test"
   },
   "dependencies": {
-    "commoner": "~0.8.4",
+    "commoner": "~0.8.7",
     "esprima-fb": "~1001.1001.2000-dev-harmony-fb",
     "jstransform": "~1.0.1"
   },