If you see this error message after "pod install"

"/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/pathname.rb:422:in `open': No such file or directory - /Users/me/.cocoapods/repos (Errno::ENOENT)"

please run "pod setup" first.

that means there is not yet repo for pods.

if you still see the problem with "repo

It's highly possible that your repository is broken.

in this case, at first remove repo.

"sudo rm -fr ~/.cocoapods/repos/master"

and setup pods again.

"pod setup"

then, "pod install" will work well.

박상건 - gunnih