readme

Signed-off-by: microwavedcola1 <microwavedcola@gmail.com>

README.md

@@ -1,5 +1,25 @@
-Development
+### Development
 * rustc 1.57.0 (f1edd0429 2021-11-29)
 * anchor-cli 0.20.1
 * npm 8.1.2
-* node v16.13.1
+* node v16.13.1
+
+### Module structure
+As and when we move to a more complete project, we should think of having multiple modules
+e.g. core/shared, spot, perpetuals, etc., and then each would have its own instructions and state sub module
+```
+programs
+└── mango-v4
+    ├── Cargo.toml
+    ├── Xargo.toml
+    └── src
+    │    ├── error.rs
+    │    ├── instructions # instructions go here, each instruction gets an individual file
+    │    │   ├── initialiaze.rs
+    │    │   └── mod.rs
+    │    ├── lib.rs
+    │    └── state # state goes here, each account state gets an individual file
+    │       └── mod.rs
+    └── tests # rust tests, TODO  
+```
+