Add release candidate option. Add node required message. Bump version.

src/core/Env.js

@@ -53,7 +53,12 @@ jasmine.Env.prototype.version = function () {
 jasmine.Env.prototype.versionString = function() {
   if (jasmine.version_) {
     var version = this.version();
-    return version.major + "." + version.minor + "." + version.build + " revision " + version.revision;
+    var versionString = version.major + "." + version.minor + "." + version.build;
+    if (version.release_candidate) {
+      versionString += ".rc" + version.release_candidate
+    }
+    versionString += " revision " + version.revision
+    return versionString;
   } else {
     return "version unknown";
   }

src/core/version.json

@@ -1,5 +1,6 @@
 {
-  "major": 1,
-  "minor": 1,
-  "build": 0
+  "major": 2,
+  "minor": 0,
+  "build": 0,
+  "release_candidate": 1
 }