restructring examples (#909)

* restructring examples

* modifications to titles/paths

* cleanup
Co-authored-by: root <root@rocm-framework-3.amd.com>

examples/README.md

 # AMD MIGraphX Examples
 
 ## Description
-This directory contains examples of common use cases for MIGraphX.
+This directory contains examples of common use cases for MIGraphX. 
 
 ## Examples:
-- [C++ Parse, Load, and Save Graph Programs](./cpp_parse_load_save)
-- [C++ MNIST Inference](./cpp_api_inference)
-- [Exporting Frozen Graphs in TF1](./export_frozen_graph_tf1)
-- [Exporting Frozen Graphs in TF2](./export_frozen_graph_tf2)
+- [MIGraphX usage and utilities](./migraphx)
+- [Vision inference examples](./vision)
+- [Natural language inference examples](./nlp)
\ No newline at end of file
-- [MIGraphX Docker Container](./migraphx_docker)
-- [MIGraphX Driver](./migraphx_driver)
-- [Python Resnet50](./python_api_inference)
-- [Python BERT-SQuAD](./python_bert_squad_example)
-- [Python Super Resolution](./python_super_resolution)
-- [Python NFNet](./python_nfnet_inference)
-- [Python U-Net](./python_unet)
-- [Python 3D-UNet](./python_3dunet)

examples/migraphx/README.md

+# AMD MIGraphX usage and utilities
+
+- [C++ Parse, Load, and Save Graph Programs](./cpp_parse_load_save)
+- [Exporting Frozen Graphs in TF1](./export_frozen_graph_tf1)
+- [Exporting Frozen Graphs in TF2](./export_frozen_graph_tf2)
+- [MIGraphX Docker Container](./migraphx_docker)
+- [MIGraphX Driver](./migraphx_driver)
\ No newline at end of file

examples/nlp/README.md

+# Natural Language Processing Inference Examples
+
+- [Python BERT-SQuAD](./python_bert_squad)
\ No newline at end of file