pod repo push 报错：Unable to add a source with url `` named -1.
解决方法：添加 --source
pod repo push GPSpecs GPFoundation.podspec --sources='https://github.com/YanweiLi/GPSpecs.git,https://github.com/CocoaPods/Specs.git' --verbose --allow-warnings