Installation steps are unclear

[elopez]

The installation steps say To install the python dependencies, run these commands:, but the commands need to be run on a git clone of the rattle repository, and not on a random path. We should add a bit of text to make that clear.

[woodruffw]

If you want to go the extra mile, IMO we should publish this on PyPI (rattle is already taken, but maybe rattle-evm?) and include the pip install ... instructions in the README 🙂

[Jesserc]

If you want to go the extra mile, IMO we should publish this on PyPI (rattle is already taken, but maybe rattle-evm?) and include the pip install ... instructions in the README 🙂

Yes please, that would be better.