New Readme

README.md

@@ -1,14 +1,20 @@
 # MongoDBPerformanceTuningBook
 
-This repository contains all helper scripts for the Apress book "MongoDB Performance Tuning".
+This repository contains helper scripts and examples for the Apress book "MongoDB Performance Tuning". - https://www.apress.com/us/book/9781484268780 
 
-# Scripts:
 
-## [Chapter 3](./Chapter3/README.md)
+The master script [mongoTuning.js](mongoTuning.js) provides access to all these scripts from within a MongoDB shell session.  To use these scripts from within a MongoDB shell, simply issue the mongo command with the script name as an argument and add the '--shell' option, for example:
+```
+$ mongo --shell mongoTuning.js
+MongoDB shell version v4.2.0
+connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
+ 
+MongoDB server version: 4.2.0
 
-- QueryProfiler.js
-- ServerStats.js
+rs0:PRIMARY>
+```
 
-## Genreal
+The examples can also be found in our GitHub repository under the [Examples](Examples) folder.  The data that these examples use can be found in the [sampleData](sampleData) folder as a compressed dump file.  Instructions on how to load the data can be found in the same folder. 
+
+If you have any queries about this repository, please contact Guy at <[email protected]> or Mike at <[email protected]>.
 
-- mongoTuning.js