review .standard-GEM.md file

[mihai-sysbio]

Description of the issue:

The file in question starts with:

This document serves as a checklist for creating an open source genome-scale metabolic model (GEM) on GitHub.

I propose the revision of this file by check-marking all sections that apply. Also, as part of this step, the README should also be revised.

Expected feature/value/output:

A revised standard-GEM file, with all revelant boxes checked, and an improved README.

I hereby confirm that I have:

• [ ] Tested my code with all requirements for running the model
• [ ] Done this analysis in the master branch of the repository
• [x] Checked that a similar issue does not exist already
• [ ] If needed, asked first in the Gitter chat room about the issue

[haowang-bioinfo]

@mihai-sysbio thanks for spotting this, welcome to fix it.

[haowang-bioinfo]

feel free to reopen this