Update butters_gp30_gp31.md

There are still important things missing:

• Example of genomic structure
• Distribution of the system among prokaryotes

There is also a mistake in the experimental validation part. It works against 2 phages: PurpleHaze and Alma, and here it appears as one phage markes as "PurpleHazeandAlma" To be corrected

requested review from @ftesson

assigned to @hshomar

Check my comments. Important things missing

closed

reopened

link to #280 (closed)

added 1 commit

• 10df40aa - Update butters_gp30_gp31.md

Compare with previous version

added pending review label

added 1 commit

• bd06c5b6 - Update butters_gp30_gp31.md

Compare with previous version

added 1 commit

• 4a40b290 - fix experimentaly validated butters_gp30_gp31

Compare with previous version

@ftesson I let it open, merge it when you think it's done

resolved all threads

mentioned in commit 5996fd89

merged