[DOCS] Add Telemetry Readme and ChangeLog CAT-66

Author: Tyler Nienhouse

ChangeLog.md

@@ -0,0 +1,11 @@
+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+### Added
+- This ChangeLog!
+- Telemetry data (basic information about the execution environment) is now added to the to the request objects being signed which is later read and logged internally by our APIs when the request is received. This allows us to better support our various SDKs and does not send any additional network requests. More information can be found in README.md.

readme.md

@@ -243,3 +243,13 @@ You can find the latest version of the SDK as a self-contained ZIP file in the [
 ## Examples
 
 Each service has it's own example - you can find them in `Examples` folder of LearnositySDK project. To run them simply invoke static `Simple` method.
+
+## Tracking
+In version v0.9.0 we introduced code to track the following information by adding it to the request being signed:
+- SDK version
+- SDK language
+- SDK language version
+- Host platform (OS)
+- Platform version
+
+We use this data to enable better support and feature planning. All subsequent versions of the SDK shall include this usage tracking.