Update README

code/kernel_MDS_lsmtree/README

-#### Metadata server with kernel stack and LSM-tree backend
-
-- Install gradle version
-https://linuxize.com/post/how-to-install-gradle-on-ubuntu-20-04/
-
-- Steps to compile/run metadata application
--- Server
-
---- ./gradlew build
-
---- ./gradlew installDist
-
---- ./app/build/install/app/bin/app
-
--- Client
-
---- ./gradlew build
-
---- ./gradlew installDist
-
---- ./app/build/install/app/bin/app <absolute-path>/app.config

code/kernel_MDS_lsmtree/README.md

+# Metadata server with kernel stack and LSM-tree backend
+
+## Getting started
+The folder code contains the HPDOS server and client implementation. To use them clone this repo.
+
+HPDOS uses `gRPC` system calls with `protocol buffers` as the data exchange standard. The project is managed using `Gradle` project manager. As a first step, install the system requirements listed at the end of this section.
+
+### Compile
+To compile the codebase run `./gradlew build` separately from the client and server root directory. Gradle should take care of installing and managing any third party libraries used.
+
+#### Steps to compile and execute metadata application
+-Server
+
+-- $ ./gradlew build
+
+-- $ ./gradlew installDist
+
+-- $ ./app/build/install/app/bin/app
+
+- Client
+
+-- $ ./gradlew build
+
+-- $ ./gradlew installDist
+
+-- $ ./app/build/install/app/bin/app <absolute-path>/app.config
+
+### Clean
+The project build generated files can be cleaned by running `./gradlew clean`
+
+### System Requirements
+- Java | OpenJDK 14.0+
+- Gradle
+-- To install gradle version
+https://linuxize.com/post/how-to-install-gradle-on-ubuntu-20-04/
+- Protocol Buffer / Protobuf