added more invalid examples on how it works
added more invalid examples on how it works

nhimbkno1/pandacoin_twitter,coyedev/twittercoin,Milstein/twittercoin,thanhquang1988/pandacoin_twitter,nhimbkno1/pandacoin_twitter,coyedev/twittercoin,coyedev/twittercoin,thanhquang1988/pandacoin_twitter,thanhquang1988/pandacoin_twitter,Milstein/twittercoin,Milstein/twittercoin,nhimbkno1/pandacoin_twitter,Milstein/twittercoin