Revert "初始化"

This reverts commit 5646b6d7f4e304e6f56c39d725bceb2504b65835.
add signup and signin function
尝试pull
test

test
Merge pull request #5 from Jacory/master

test
Merge pull request #6 from yixinduzun/master

xiaoyi
test
Merge pull request #2 from s5248/master

huang
Revert "Revert "初始化""

This reverts commit f5409ea480c02d361a69dd1ebd0fa505f6ee253e.
Merge pull request #8 from cuiliqing/master

cui
尝试pull2
解决冲突
try
new