change to readme for python import (#788)

* change to readme for python import

* added PYTHONPATH choice for using python module

* readability improvement
Co-authored-by: mvermeulen <5479696+mvermeulen@users.noreply.github.com>

README.md

@@ -153,6 +153,27 @@ In the docker container, all the required prerequisites are already installed, s
 libs](#building-migraphx-source-and-install-libs)
 section to build MIGraphX source.
 
+### Using MIGraphX Python Module
+To use MIGraphX's Python module, please either set `PYTHONPATH` or use `.deb` package as explained below:
+
+- Setting `PYTHONPATH` :
+```
+export PYTHONPATH=/opt/rocm/lib:$PYTHONPATH
+```
+- Creating and installing the package:
+
+To create deb package:
+```
+make package
+```
+This will provide the path of .deb package.
+
+To install:
+```
+dpkg -i <path_to_deb_file>
+```
+
+
 ### Calling MIGraphX APIs
 To use MIGraphX's C/C++ API in your cmake project, we need to set `CMAKE_PREFIX_PATH` to the MIGraphX
 installation location and then do