INSTALL ARMITAGE
Open up your terminal for the final time of this tutorial and issue the following commands CAREFULLY:
brew install pidof
curl -# -o /tmp/armitage.tgz http://www.fastandeasyhacking.com/download/armitage-latest.tgz
tar -xvzf /tmp/armitage.tgz -C /usr/local/share
bash -c "echo \'/usr/bin/java\' -jar /usr/local/share/armitage/armitage.jar \$\*" > /usr/local/share/armitage/armitage
perl -pi -e 's/armitage.jar/\/usr\/local\/share\/armitage\/armitage.jar/g' /usr/local/share/armitage/teamserver
ln -s /usr/local/share/armitage/armitage /usr/local/bin/armitage
ln -s /usr/local/armitage/teamserver /usr/local/bin/teamserver
CONCLUSION
If everything went well then you should be able to open up Metasploit and Armitage at any time by opening up a Terminal and typing:
sudo -E msfconsole
AND
sudo -E armitage
You'll know that you have done it correctly in you are shown a screen that looks like this...
Cheers