loongson/pypi: links for pixiedust-twitterdemo

loongson/mirror pixiedust_twitterdemo-0.4.tar.gz
loongson/mirror pixiedust_twitterdemo-0.3.tar.gz
loongson/mirror pixiedust_twitterdemo-0.2.tar.gz
loongson/mirror pixiedust_twitterdemo-0.1.tar.gz