Add readme

Author: yanchith

README.md

@@ -1,3 +1,15 @@
+_JT's instrumented branch of v1.3.24_
+
+Entrypoints in SQL service log (with info level) the type of "SQL" (or cubestore internal command) that is run, e.g.:
+
+```
+SQL SERVICE BRANCH: Statement(Explain(Query))
+```
+
+Create the docker image with: `docker build -t jt/cubestore-patched:v1.3.24 -f rust/cubestore/Dockerfile ./rust`.
+
+---
+
 <p align="center">
   <a href="https://cube.dev?ref=github-readme"><img src="https://raw.githubusercontent.com/cube-js/cube/master/docs/content/cube-logo-with-bg.png" alt="Cube — Semantic Layer for Data Applications" width="300px"></a>
 </p>