Stage README for review pre-release (#3450)

* Stage README for review pre-release

* Latest README graphic

* Update links on README

README.md

@@ -3,7 +3,7 @@
 
 <div align="left">
   <h4>
-    <a href="./ABOUT.md">Architecture & features</a> | <a href="./ecosystem-overview.md" >Ecosystem</a> | <a href="https://ngraph.nervanasys.com/docs/latest/project/release-notes.html">Release notes</a><span> | </span> <a href="https://ngraph.nervanasys.com/docs/latest">Documentation</a><span> | </span> <a href="#How-to-contribute" >Contribution guide</a>
+    <a href="./ABOUT.md">Architecture &amp; features</a> | <a href="./ecosystem-overview.md" >Ecosystem</a> | <a href="https://ngraph.ai/documentation/project/release-notes.html">Release notes</a><span> | </span> <a href="https://ngraph.ai/documentation">Documentation</a><span> | </span> <a href="#How-to-contribute" >Contribution guide</a>
  </h4>
 </div>
 
@@ -14,14 +14,14 @@ workloads on CPU for inference, please refer to the links below.
 
 |  Framework (Version)       | Installation guide                     | Notes  
 |----------------------------|----------------------------------------|-----------------------------------
-| TensorFlow*                | [Pip install](https://github.com/tensorflow/ngraph-bridge#use-pre-built-packages) or [Build from source](https://github.com/tensorflow/ngraph-bridge#build-ngraph-from-source) | 20 [Validated workloads]   
-| ONNX 1.4                   | [Pip install](https://github.com/NervanaSystems/ngraph-onnx#installation)                          | 17 [Validated workloads] 
+| TensorFlow*                | [Pip install](https://ngraph.ai/tutorials/tensorflow-tutorial#use-pre-built-packages) or [Build from source](https://ngraph.ai/tutorials/tensorflow-tutorial#build-from-source) | 20 [Validated workloads]   
+| ONNX 1.5                   | [Pip install](https://ngraph.ai/tutorials/onnx-tutorial#use-pre-built-packages)                          | 17 [Validated workloads] 
 
 
 #### Python wheels for nGraph 
 
 The Python wheels for nGraph have been tested and are supported on the following 
-64-bit systems
+64-bit systems:
 
 * Ubuntu 16.04 or later
 * CentOS 7.6
@@ -51,8 +51,7 @@ deep learning accelerators: Intel® Nervana™ Neural Network Processor for Lear
 Inference respectively.  Future plans for supporting addtional deep learning frameworks 
 and backends are outlined in the [ecosystem] section. 
 
-
-![](doc/sphinx/source/graphics/main_diagram_fw_hw.png)
+![](doc/sphinx/source/graphics/ngpipelines.png)
 
 
 While the ecosystem shown above is all functioning, we have validated 
@@ -87,22 +86,20 @@ to improve it:
 
 
 [Ecosystem]: ./ecosystem-overview.md
-[Architecture and features]:https://ngraph.nervanasys.com/docs/latest/project/about.html
-[Documentation]: https://ngraph.nervanasys.com/docs/latest
-[build the Library]: https://ngraph.nervanasys.com/docs/latest/buildlb.html
+[Architecture and features]: ./ABOUT.md
+[Documentation]: https://www.ngraph.ai/documentation
+[build the Library]:  https://www.ngraph.ai/documentation/buildlb
 [Getting Started Guides]: Getting-started-guides
-[Validated workloads]: https://ngraph.nervanasys.com/docs/latest/frameworks/validated/list.html
+[Validated workloads]: https://www.ngraph.ai/documentation/frameworks/validated/list
 [Functional]: https://github.com/NervanaSystems/ngraph-onnx/ 
 [How to contribute]: How-to-contribute
-[framework integration guides]: https://ngraph.nervanasys.com/docs/latest/frameworks/index.html
-[release notes]: https://ngraph.nervanasys.com/docs/latest/project/release-notes.html
+[framework integration guides]: https://ngraph.ai/documentation/frameworks/overview
+[release notes]: https://ngraph.ai/documentation/project/release-notes
 [Github issues]: https://github.com/NervanaSystems/ngraph/issues
-[contrib guide]: https://ngraph.nervanasys.com/docs/latest/project/contribution-guide.html
+[contrib guide]: https://ngraph.ai/documentation/contributing/guide
 [pull request]: https://github.com/NervanaSystems/ngraph/pulls
-[how to import]: https://ngraph.nervanasys.com/docs/latest/core/constructing-graphs/import.html
-[ngraph_wireframes_with_notice]: doc/sphinx/source/graphics/readme_stack.png "nGraph wireframe"
-[ngraph_diagram_with fw_hw]: doc/sphinx/source/graphics/main_diagram_fw_hw.png "nGraph stack with current framework & backend support"
-[ngraph-compiler-stack-readme]: doc/sphinx/source/graphics/ngraph-compiler-stack-readme.png "nGraph Compiler Stack"
+[how to import]: https://ngraph.ai/tutorials/onnx-tutorial#import-a-model-with-onnx-and-ngraph
+[ngraph_wireframes_with_notice]: doc/sphinx/source/graphics/ngpipelines.png "nGraph wireframe"
 [build-status]: https://travis-ci.org/NervanaSystems/ngraph/branches
 [build-status-badge]: https://travis-ci.org/NervanaSystems/ngraph.svg?branch=master
 [PlaidML]: https://github.com/plaidml/plaidml