Update documentation and add python API documentation

Change-Id: Ibccf5b6a5fba81cea42e04a022deac8a3207b9b8


[ROCm/rocm_smi_lib commit: 50a079af0f]

projects/rocm-smi-lib/python_smi_tools/README.md

@@ -1,4 +1,4 @@
-## Radeon Open Compute (ROCm) - System Management Interface - Command Line Tool
+# Radeon Open Compute (ROCm) - System Management Interface - Command Line Tool
 
 This tool acts as a command line interface for manipulating
 and monitoring the amdgpu kernel, and is intended to replace