解决The current branch is not configured for pull No value for key branch.master.merge found in config
1.在本地工程目录找到config文件（我的是在D:\wamp\youthstartup\.git）；
2.修改config文件内容为：
[core]
repositoryformatversion = 0
filemode = false
logallrefupdates = true
[branch "master"]
remote = origin
merge = refs/heads/master
[remote "origin"]
url = https://git.oschina.net/yuyunhe/youthstartup.git （修改为自己的url）
fetch = +refs/heads/*:refs/remotes/origin/*
repositoryformatversion = 0
filemode = false
logallrefupdates = true
[branch "master"]
remote = origin
merge = refs/heads/master
[remote "origin"]
url = https://git.oschina.net/yuyunhe/youthstartup.git （修改为自己的url）
fetch = +refs/heads/*:refs/remotes/origin/*
