Add 1password install to brew.sh

Author: donnemartin

brew.sh

@@ -158,6 +158,7 @@ brew cask install --appdir="/Applications" skype
 brew cask install --appdir="/Applications" slack
 brew cask install --appdir="/Applications" dropbox
 brew cask install --appdir="/Applications" evernote
+brew cask install --appdir="/Applications" 1password
 #brew cask install --appdir="/Applications" gimp
 #brew cask install --appdir="/Applications" inkscape