Merge pull request #238 from overstarry/master

Create FAQ.md

doc/wiki-cn/FAQ.md

@@ -0,0 +1,12 @@
+#安装失败
+
+执行
+```shell
+go get -u github.com/bilibili/kratos/tool/kratos
+```
+出现以下错误时
+```shell
+go: github.com/prometheus/client_model@v0.0.0-20190220174349-fd36f4220a90: parsing go.mod: missing module line
+go: github.com/remyoudompheng/bigfft@v0.0.0-20190806203942-babf20351dd7e3ac320adedbbe5eb311aec8763c: parsing go.mod: missing module line
+```
+如果你使用了https://goproxy.io/ 代理,那你要使用其他代理来替换它，然后删除GOPATH目录下的mod缓存文件夹,然后重新执行安装命令