我想将Google Analytics添加到我的ios应用中，
所以，当我尝试pod install时，我得到了
[!] Error installing Google
[!] /usr/local/bin/curl -f -L -o /var/folders/3_/j0hsqdp94lq_g08t50s3p5_r0000gn/T/d20151102-49906-p891cj/file.zip https://www.gstatic.com/cpdc/02468137448ba914-Google-1.0.7.zip --create-dirs
curl: (1) Protocol "https" not supported or disabled in libcurl