Document that Isolate::GetCurrent() must not be called before initialization

include/v8.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /** \mainpage V8 API Reference Guide
  *
  * V8 is Google's open source JavaScript engine.
  *
  * This set of documents provides reference material generated from the
  * V8 header file, include/v8.h.
@@ skipping 4632 matching lines @@
    * When an isolate is no longer used its resources should be freed
    * by calling Dispose().  Using the delete operator is not allowed.
    *
    * V8::Initialize() must have run prior to this.
    */
   static Isolate* New(const CreateParams& params = CreateParams());
 
   /**
    * Returns the entered isolate for the current thread or NULL in
    * case there is no current isolate.
+   *
+   * This method must not be invoked before V8::Initialize() was invoked.
    */
   static Isolate* GetCurrent();
 
   /**
    * Methods below this point require holding a lock (using Locker) in
    * a multi-threaded environment.
    */
 
   /**
    * Sets this isolate as the entered one for the current thread.
@@ skipping 2769 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_