chore: remove experimental note from README (#1719)

Co-authored-by: Omair Naveed <[email protected]>

README.rst

@@ -1,3 +1,5 @@
+.. _codingstyle:
+
 API Client Generator for Python
 ===============================
 
@@ -15,12 +17,81 @@ to generate a client library.
 Purpose
 -------
 
-This library primarily exists to facilitate experimentation, particularly
-regarding:
+This library replaces the `monolithic generator`_
+with some improvements:
 
 - An explicit normalized format for specifying APIs.
 - Light weight, in-language code generators.
 
+.. _monolithic generator: https://github.com/googleapis/gapic-generator
+
+
+Bazel
+-------------
+This generator can be called from Bazel, which is a recommended way of using it inside a continuous integration build or any other automated pipeline.
+
+Clone the googleapis repository
+$ git clone https://github.com/googleapis/googleapis.git
+
+Create the targets
+------------------
+You need to add the following targets to your BUILD.bazel file.
+
+.. code-block:: c
+
+        load(
+            "@gapic_generator_python//rules_python_gapic:py_gapic.bzl",
+            "py_gapic_library"
+        )
+
+        load(
+            "@gapic_generator_python//rules_python_gapic:py_gapic_pkg.bzl",
+            "py_gapic_assembly_pkg"
+        )
+
+        py_gapic_library(
+            name = "documentai_py_gapic",
+            srcs = [":documentai_proto"],
+        )
+
+        py_gapic_assembly_pkg(
+            name = "documentai-v1beta2-py",
+            deps = [
+                ":documentai_py_gapic",
+            ],
+        )
+
+
+Compiling an API
+----------------
+
+Using Bazel:
+
+.. code-block:: c
+
+        bazel build //google/cloud/documentai/v1beta2:documentai-v1beta2-py
+
+Using Protoc:
+
+.. code-block:: c
+
+        # This is assumed to be in the `googleapis` project root.
+        $ protoc google/cloud/vision/v1/*.proto \
+            --python_gapic_out=/dest/
+
+Development
+-------------
+`Development`_
+
+.. _Development: https://github.com/googleapis/gapic-generator-python/blob/main/DEVELOPMENT.md
+
+Contributing
+-------------
+If you are looking to contribute to the project, please see `Contributing`_
+for guidlines.
+
+.. _Contributing: https://github.com/googleapis/gapic-generator-python/blob/main/CONTRIBUTING.md
+
 Documentation
 -------------