MIT license name is not in spdx format

[ufukhurriyetoglu]

We have issue with license checkers due to license short name not listed at
https://github.com/akshaynagpal/w2n/blob/master/setup.py#L16

It should be MIT as mentioned in https://spdx.org/licenses/MIT.html

[akshaynagpal]

Thanks for pointing this out. I will look into this ASAP.
Meanwhile, you're also welcome to fix the error and submit a Pull Request. If it passes all the tests, it will be merged most probably.

[ufukhurriyetoglu]

thanks for your response @akshaynagpal . If I can schedule time, for sure I will fix the issue and create a Pull Request.