Clarify REAME.rst comment regarding bad idea

[robertlugg]

I had to read this comment a few times and still don't exactly know what its trying to say.

Why You Shouldn't Use Julia for Administrative Scripts
It's just a bad idea!

I think you want to say that "mostly Julia is great but here are the negatives when using for Administrative Scripts", yet much more concise than I can write.

I would suggest instead to change those two to just be
First, Why might you not want to use Julia for Administrative Script
And then the bullet points.

[henry2004y]

I have recently learned that in Julia you can change compilation level per package. For scripting tasks like being described here, it might be useful to just stick to -O0, as opposed to the default -O2.

[ninjaaron]

Thanks for the comment @henry2004y I'll add something about -O0 and --compile=min in 1.5.

[xgdgsc]

This section needs an update for 1.9.