Install ChromeDriver in Linux Mint
1. Install unzip
sudo apt-get install unzip
2. Download last version of ChromeDriver and unzip it
wget -N http://chromedriver.storage.googleapis.com/2.9/chromedriver_linux64.zip -P ~/Downloads
unzip ~/Downloads/chromedriver_linux64.zip -d ~/Downloads
3. Make it executable and move to /usr/local/share
chmod +x ~/Downloads/chromedriver
sudo mv -f ~/Downloads/chromedriver /usr/local/share/chromedriver
4. Create symbolic links
sudo ln -s /usr/local/share/chromedriver /usr/local/bin/chromedriver
sudo ln -s /usr/local/share/chromedriver /usr/bin/chromedriver