Remove deprecated kwargs

Removes unsupported (deprecated and unused) IPUConfig params from older configs (these will raise an error in latest build of Optimum Graphcore) (#1)

Update README.md

Update README.md

Update README.md

Update README.md

Update model description

Update README.md

Update README.md

Update README.md

Update README.md

Added Graphcore/bert-base-uncased weights and configs

initial commit