Bumping Versions

Update all four files together when changing the version number:

File	Field
go/libkb/version.go	const Version = "X.X.X"
shared/ios/Keybase/Info.plist	CFBundleShortVersionString
shared/ios/KeybaseShare/Info.plist	CFBundleShortVersionString
shared/android/app/build.gradle	def VERSION_NAME = "X.X.X"