benchmark

1965927b - Wording and nit updates to README and ADDING_MODELS documentation (#1202)

Wording and nit updates to README and ADDING_MODELS documentation (#1202) Summary: Updated some wording and also fixed some nits in the documentation, specifically around README and ADDING_MODELS. Tested updates via viewing on online md previewer: - https://www.internalfb.com/intern/px/p/2dPrB - https://www.internalfb.com/intern/px/p/2dPrT Pull Request resolved: https://github.com/pytorch/benchmark/pull/1202 Reviewed By: xuzhao9 Differential Revision: D39817639 Pulled By: adnanaziz fbshipit-source-id: 8dd653e2b67e87d59f97e63338c8d8ece9231294