Update README.md with new installation procedures

[nickrsan]

No description provided.

[AdamJCrawford]

Do you think we should be more explicit about gdal installation in the installation section of the readme? Ie it is not as simple as python -m pip install eedl if you don't have gdal installed. Might cause confusion for some down the line if they are unfamiliar with gdal.

[nickrsan]

Yes, I think you're absolutely right about that. That's a good catch. I'm also going to update this PR with the new license information. Can you think of a reason to go with anything except MIT license? That's my goto, but I'm happy to do something else if you see a reason

[nickrsan]

OK @AdamJCrawford when you get a chance, will you take another look? I now mention GDAL before the pip command.

[AdamJCrawford]

Yes, I think you're absolutely right about that. That's a good catch. I'm also going to update this PR with the new license information. Can you think of a reason to go with anything except MIT license? That's my goto, but I'm happy to do something else if you see a reason

I exclusively use MIT unless I'm doing something with other peoples code that isn't MIT

[AdamJCrawford]

LGTM