Fixed missing space between IE and 9

Hello Josh,

I was using your snippet library, when I came across this bug in the shiv-snippet. It's missing a space between IE and 9 which renders the conditional statement as text in IE<9, you should check it out.

Cheers,
p.

P.S. I hope I'm doing everything ok here, I'm new to GIT, never really done anything besides fiddling around with it.