linkedIn (delete this line)
usage: linkedIn(url, title, description, source) (delete this line)
LinkedIn (insert image / button here)
Facebook (delete this line)
usage: facebook(url, title, description, image_url) (delete this line)
Facebook (insert image / button here)
Google+ (delete this line)
usage: plusone(url) (delete this line)
Google+ one (insert image / button here)
Twitter (delete this line)
usage: tweet(url, description) (delete this line)
Twitter (insert image / button here)