Update Prerequisites and Scope

[fjclark]

Proposed Change

Update the "Prerequisites and Scope" section to reflect focus on the single calculations and alert readers to the existence of the "multiple calculations" best practices. Note that @mrshirts has volunteered to address multiple binding sites, so this can be removed from the "not addressed" section.

The original best practices guide will be split into two documents: the first will gives best practices for running a single calculation (and cover theory in more depth/ detail system-specific setup etc.), while the second will give best practices for running multiple calculations (with a focus on automation). The first will become version 2.0 of the current guide, while the second will be submitted as a new manuscript (https://github.com/alchemistry/largescale-alchemy-best-practices).

Proposed Authors and Reviewers

Please volunteer (before the end of January) to author/ review and state when you're available. Authors, please say roughly when you plan to contribute the changes (no later than the end of May).

Proposed author: Volunteer wanted
Proposed reviewer: Volunteer wanted