Ignore warnings when running `pod lib lint`
Ignore warnings when running `pod lib lint`

Remove `--allow-warnings` when https://github.com/CocoaPods/CocoaPods/issues/5188 is resolved

0xced/XCDYouTubeKit,twobitlabs/XCDYouTubeKit,gshaviv/XCDYouTubeVideoPlayerViewController,kumabook/XCDYouTubeKit,kumabook/XCDYouTubeKit,c0unt0/XCDYouTubeKit,itamaker/XCDYouTubeKit,morrisirrom/XCDYouTubeKit,0xced/XCDYouTubeKit,c0unt0/XCDYouTubeKit,kumabook/XCDYouTubeKit,twobitlabs/XCDYouTubeKit,twobitlabs/XCDYouTubeKit,kumabook/XCDYouTubeKit,0xced/XCDYouTubeKit,kumabook/XCDYouTubeKit,morrisirrom/XCDYouTubeKit,gshaviv/XCDYouTubeVideoPlayerViewController,morrisirrom/XCDYouTubeKit,gshaviv/XCDYouTubeVideoPlayerViewController,creationst/XCDYouTubeKit,morrisirrom/XCDYouTubeKit,gshaviv/XCDYouTubeVideoPlayerViewController,mingsai/XCDYouTubeVideoPlayerViewController,creationst/XCDYouTubeKit,kumabook/XCDYouTubeKit,itamaker/XCDYouTubeKit,twobitlabs/XCDYouTubeKit,c0unt0/XCDYouTubeKit,mingsai/XCDYouTubeVideoPlayerViewController,c0unt0/XCDYouTubeKit,mingsai/XCDYouTubeVideoPlayerViewController,creationst/XCDYouTubeKit,mingsai/XCDYouTubeVideoPlayerViewController,c0unt0/XCDYouTubeKit,creationst/XCDYouTubeKit,morrisirrom/XCDYouTubeKit,gshaviv/XCDYouTubeVideoPlayerViewController,gshaviv/XCDYouTubeVideoPlayerViewController,0xced/XCDYouTubeKit