Update README.md

README.md

@@ -21,4 +21,19 @@ The project build generated files can be cleaned by running `./gradlew clean`
 ### System Requirements
 - Java | OpenJDK 14.0+
 - Gradle
-- Protocol Buffer / Protobuf
+- Protocol Buffer / Protobuf
\ No newline at end of file
+
+## Directory Structure
+```
+├── code
+│   ├── DPDK_server_MDcache
+│   ├── mTCP_server_MDcache
+│   ├── kernel_MDS_lsmtree
+│   ├── checksum-offload-p4
+├── net_stack_repos
+│   ├── dpdk-19.11.8.tar.xz 
+│   ├── mtcp-devel.tar.xz
+├── documentation
+│   ├── HPDOSlearningsDocumented.pdf
+│   ├── videoLinks
+```