add basic documentation; some details may be filled in or updated later

Change-Id: I7defee478ae935ef86bdb8a769adc3fcc0ac0286
Signed-off-by: pceicicd <pekwatch746@gmail.com>
diff --git a/docs/index.rst b/docs/index.rst
new file mode 100644
index 0000000..65c7c9f
--- /dev/null
+++ b/docs/index.rst
@@ -0,0 +1,20 @@
+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. SPDX-License-Identifier: CC-BY-4.0
+.. Copyright (C) 2021 China Mobile Technology (USA) Inc. Intellectual Property
+
+
+Welcome to O-RAN SC lp Documentation
+============================================
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Contents:
+
+   overview.rst
+   release-notes.rst
+   installation-guide.rst
+   developers-guide.rst
+
+* :ref:`genindex`
+* :ref:`modindex`
+* :ref:`search`