DRAM v2 README has too much hard coded things in it (like the --help output)

[madeline-scyphers]

Though it is nice to see the --help output in the README, it shouldn't go there since if the CLI output info changes, you often forget to update the README, and then your docs are inaccurate. You forget to add new options, update, etc. https://nf-co.re/docs/usage/introduction has some examples on how to build documentation automatically (for things like readthedocs) that come from your CLI stuff. So you reduce the number of places it comes from. You update it in as few of places as possible so your docs don't get out of date.