Use proper MIT license

[johnnyshields]

This project has a modified form of the MIT license which makes it a PITA to use at companies. Even though it would be basically fine to use, any project which does not have a FOSS license following the exact wording of the license needs a customized legal review (i.e. you have to pay lawyers.)

Specifically this language problematic:

Any publication of projects using uroman shall acknowledge its use: "This project uses the universal romanizer software 'uroman' written by Ulf Hermjakob, USC Information Sciences Institute (2015-2020)".
Bibliography: Ulf Hermjakob, Jonathan May, and Kevin Knight. 2018. Out-of-the-box universal romanization tool uroman. In Proceedings of the 56th Annual Meeting of Association for Computational Linguistics, Demo Track.

The clear intent of this language is to ensure the work (uroman) is cited in academic papers. It's better to move this requirement to the README instead.

Moving this wording to the README does not materially change the spirit of the license, nor does it impose any extra burden on users, so I think it's fine for the project maintainer to unilaterally accept it.