Can not install on mac os x

[sunfmin]

$ go get -u github.com/liushuchun/wechatcmd
# cd /Users/sunfmin/gopkg/src/github.com/liushuchun/wechatcmd; git submodule update --init --recursive
fatal: No url found for submodule path 'vendor/github.com/daviddengcn/go-colortext' in .gitmodules
package github.com/liushuchun/wechatcmd: exit status 128

[liushuchun]

@sunfmin 已经修复了，多谢大哥。