Fix update.sh to not mistakenly capture RCs (and thus push 3.4 down to 3.4.1, since 3.4.2 isn't actually out yet)
Merge pull request #17 from infosiftr/fix-update

Fix update.sh to not mistakenly capture RCs (and thus push 3.4 down to 3.4.1, since 3.4.2 isn't actually out yet)