Assuage python fears

[coolaj86]

Re: #4

Provide simple instructions for installing a conflict-free version of python which is known to work with mdslides

Preview at https://github.com/coolaj86/markdown-slides/tree/patch-2

[dadoomer]

This is a good idea. There is a caveats however:

This only works for sure in bash shells. For instance, the pyenv executable is added to PATH in fish. Bash should account for the majority of users, but changing:

Here's a fearless, conflict-free python install that Just Works™:

to

Here's a fearless, conflict-free python install that Just Works™ on a bash shell:

I'll merge and then change the code.

[coolaj86]

It looks like you discovered this, but that will work in bash, fish, and zsh.

It won’t work in PowerShell yet, and maybe or maybe not in more obscure shells.