Install Phantomjs on Amazon Linux ec2

sudo yum install fontconfig freetype freetype-devel fontconfig-devel libstdc++
wget https://bitbucket.org/ariya/phantomjs/downloads/phantomjs-2.1.1-linux-x86_64.tar.bz2
bzip2 -d hantomjs-2.1.1-linux-x86_64.tar.bz2
sudo tar -xvf phantomjs-2.1.1-linux-x86_64.tar
sudo ln -s ~/phantomjs-2.1.1-linux-x86_64.tar.bz2/bin/phantomjs /usr/bin/phantomjs

Finally, 

phantomjs -v

will return 2.1.1