fix the missing __version__, covers issues #6

Author: Mortimerp9

are/__init__.py

@@ -1 +1,9 @@
 # Meta Platforms, Inc. and affiliates. Confidential and proprietary.
+
+from importlib.metadata import PackageNotFoundError, version
+
+try:
+    __version__ = version("meta-agents-research-environments")
+except PackageNotFoundError:
+    # package is not installed
+    __version__ = "unknown"

docs/user_guide/installation.rst

@@ -1,7 +1,7 @@
 ..
     Copyright (c) Meta Platforms, Inc. and affiliates.
     All rights reserved.
-    
+
     This source code is licensed under the terms described in the LICENSE file in
     the root directory of this source tree.
 
@@ -122,8 +122,8 @@ To verify your installation works correctly:
 
    .. code-block:: python
 
-      import are.simulation
-      print(are.simulation.__version__)
+      import are
+      print(are.__version__)
 
 2. **Run a Simple Scenario**