Update README.md (#616)

Author: daniellepintz

README.md

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 ## Overview
-The primary purpose of the torchforge ecosystem is to delineate infra concerns from model concerns thereby making RL experimentation easier. torchforge delivers this by providing clear RL abstractions and one scalable implementation of these abstractions. When you need fine-grained control over placement, fault handling/redirecting training loads during a run, or communication patterns, the primitives are there. When you don’t, you can focus purely on your RL algorithm.
+The primary purpose of the torchforge ecosystem is to separate infra concerns from model concerns thereby making RL experimentation easier. torchforge delivers this by providing clear RL abstractions and one scalable implementation of these abstractions. When you need fine-grained control over placement, fault handling/redirecting training loads during a run, or communication patterns, the primitives are there. When you don’t, you can focus purely on your RL algorithm.
 
 Key features:
 - Usability for rapid research (isolating the RL loop from infrastructure)