<code>
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/Library/Ruby/Site/2.0.0/rubygems/dependency.rb:308:in to_specs': Could not find 'cocoapods' (>= 0) among 11 total gem(s) (Gem::MissingSpecError) Checked in 'GEM_PATH=/Users/tiamo/.gem/ruby/2.0.0:/Library/Ruby/Gems/2.0.0:/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/gems/2.0.0', executegem envfor more information from /Library/Ruby/Site/2.0.0/rubygems/dependency.rb:320:into_spec'
from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_gem.rb:65:in gem' from /usr/local/bin/pod:22:in<main>'
</code>
在终端输入 sudo gem install -n /usr/local/bin cocoapods，即可解决，用这句就好使，我进入了那个所谓的文件夹，认真的分析了下应该是没有成功写入那个文件，只是在缓存里写入了而已，所以关掉就不好使，但是如果用这句话的话就可以直接指入写入的文件。就防止了刚刚的问题。
Podfile文件编写
source 'https://github.com/CocoaPods/Specs.git'
platform :ios, '7.0'
inhibit_all_warnings!
xcodeproj 'test'
pod 'AFNetworking', '~> 3.0.0'
pod 'SDWebImage', '~> 3.7.6'
target :test do
end
post_install do |installer|
installer.pods_project.targets.each do |target|
puts #{target.name}
end
end
