Setup: longer sudo timeout in setup script (kinda).

setup/update.sh

@@ -21,11 +21,13 @@ echo
 
 # OS X
 header "Updating OS X..."
+sudo -v
 sudo softwareupdate -i -a
 echo
 
 # Homebrew
 header "Updating Homebrew..."
+sudo -v
 brew update
 brew upgrade
 brew cleanup
@@ -33,22 +35,26 @@ echo
 
 # NPM
 header "Updating NPM..."
+sudo -v
 npm update npm -g
 npm update -g
 echo
 
 # Ruby gems
 header "Updating Ruby gems..."
+sudo -v
 sudo gem update
 echo
 
 # Python
 header "Updating Python packages..."
+sudo -v
 sudo pip install --upgrade fabric
 echo
 
 # git-friendly
 header "Updating git-friendly..."
+sudo -v
 sudo bash < <( curl https://raw.github.com/jamiew/git-friendly/master/install.sh)
 echo