[!] The dependency `BmobSDK` is not used in any concrete target.
解决办法： 在Podfile文件中写入
platform :ios, '10.0'
target "BmobCocoPods" do
pod 'BmobSDK'
end
ERROR: While executing gem ... (Errno::EPERM)
Operation not permitted - /usr/bin/pod
解决办法：
sudo gem install -n /usr/local/bin cocoapods --pre
