Enhance README with Users and Contributors sections

Added sections for Users and Contributors to README.

Signed-off-by: Ahmed Jamil <197998703+CodeAhmedJamil@users.noreply.github.com>

Author: CodeAhmedJamil

README.md

@@ -2,6 +2,12 @@
 
 Intel Performance Platform for use on internal networks in assessment of cloud native traffic with a specific focus on efficiencies in the configuraiton of Envoy, Nighthawk, Meshery and Intel hardware tuning.
 
+### Users
+
+Access to this environment is restricted to internal Intel networks. This is subject to change in the future.
+
 Note: _Using WASM HTTP parsing filters for Envoy, this site is dynamically rewritten per page load._
 
+### Contributors
+
 This repository is a static GitHub Pages site. It does not require Jekyll, Bundler, or a local Ruby toolchain to develop or deploy.