OpenCV cocoapods error解决方案

error:

bogon:issue-21-OpenCV-FaceRec-master JackieYip$ pod install --no-repo-update
Analyzing dependencies
Downloading dependencies
Installing OpenCV (2.4.9.1)

[!] Error installing OpenCV
[!] /usr/bin/curl -f -L -o /var/folders/km/k1znc3xx6mqcbffb82wv2xj00000gn/T/d20160523-60436-1swphpl/file.zip http://hivelocity.dl.sourceforge.net/project/opencvlibrary/opencv-ios/2.4.9/opencv2.framework.zip --create-dirs

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (6) Could not resolve host: hivelocity.dl.sourceforge.net

解决方案：
http://stackoverflow.com/questions/31005022/cant-install-opencv-with-cocoapods-could-not-resolve-host-hivelocity-dl-sourc