[doc] Update README.md (#244)

* Update README.md

* Update README.md

update capitalization
Co-authored-by: Vittorio Caggiano <caggiano@gmail.com>

README.md

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 ## Description
-fairscale is a PyTorch extension library for high performance and large scale training for optimizing training on one or across multiple machines/nodes. This library extend basic pytorch capabilities while adding new experimental ones.
+FairScale is a PyTorch extension library for high performance and large scale training on one or multiple machines/nodes. This library extends basic PyTorch capabilities while adding new experimental ones.
 
-fairscale supports:
+FairScale supports:
 * Parallelism:
    * pipeline parallelism (fairscale.nn.Pipe)
 * Sharded training: