sudo apt-get install build-essential chrpath libssl-dev libxft-dev libfreetype6-dev libfreetype6 libfontconfig1-dev libfontconfig1 -y
sudo wget https://bitbucket.org/ariya/phantomjs/downloads/phantomjs-2.1.1-linux-x86_64.tar.bz2
sudo tar xvjf phantomjs-2.1.1-linux-x86_64.tar.bz2 -C /usr/local/share/
Next, create a symlink of PhantomJS binary file to systems bin dirctory:
sudo ln -s /usr/local/share/phantomjs-2.1.1-linux-x86_64/bin/phantomjs /usr/local/bin/