Fixed 'pip install from github' command in readme
Fixed 'pip install from github' command in readme

In zsh at least, the command fails unless you quote the URL with:

`zsh: no matches found: git+https://github.com/cpbotha/nvpy.git#egg=nvpy`
bwillistower/nvpy,yuuki0xff/nvpy,khornberg/nvpy-gtk,trankmichael/nvpy,dwu/nvpy,dwu/nvpy,yuuki0xff/nvpy