Add publication guidelines

[adlarkin]

Motivated by #113

• Define rules for publication titles (default is to link to paper PDF)
• Highlight cases such as project websites and non-textual publications

[amalnanavati]

LGTM. Maybe keep it open for a few days in case others want to weigh in?

[amalnanavati]

Actually, maybe add an explicit guideline that the website should be persistent (i.e., on a web domain or resource that will outlive your time in lab and that other lab members will have access to if need be)?

[adlarkin]

Actually, maybe add an explicit guideline that the website should be persistent (i.e., on a web domain or resource that will outlive your time in lab and that other lab members will have access to if need be)?

Added in 2b16e73. I will leave this open for a few days before merging to make sure no other policies change.