I reposted an article to avoid high maintenance cost of the repo and as well, everyone can have a try, no more need to repy on cloing the repo.
First of all, the steps of how to install laravel is omitted, use
laravel new blog directly.
If you are a Chinese mainland user, you can use the composer image: http://pkg.phpcomposer.com
If there is a
new like( Hmmm, anyway, I met the problem everytime. OTZ )