Update README.md

README.md

@@ -27,8 +27,10 @@ asyncronous activity records pool support.
 ## To build and run test
 ```
  - ROCm-2.3 or higher is required
-
-  cd <your path>
+ - Python2.7 is required.
+  The required modules: CppHeaderParser, argparse.
+  To instaLL:
+  sudo pip install CppHeaderParser argparse
 
  - CLone development branch of roctracer:
   git clone -b amd-master https://github.com/ROCm-Developer-Tools/roctracer