1.前往文件夾?~/.cocoapods/repo，如下
repos
2.master -> Specs -> 1 -> 9 -> 2 ->?libwebp ->?1.1.0(最新版本椒振，非rc) ,source下的git改為https://github.com/webmproject/libwebp.git肢藐，如下
?"source": {
? ? "git": "https://github.com/webmproject/libwebp.git",
? ? "tag": "v1.1.0"
? },
3.pod install
