Xcode 9 support + update version in cocoapods repo to latest

[kmiloaguilar]

14

[seeppp]

go for it: https://cocoapods.org/pods/PlainPing

[Speakus]

@seeppp cool. could you update this file to: https://github.com/naptics/PlainPing/blob/master/PlainPing.podspec to make it consistancy please

[seeppp]

😘 3a3e52b4e0463a499f732b102575a12171ad0a46