Update CocoaPods to 1.4.0 and add pod update repo in build script (close #347)
Update CocoaPods to 1.4.0 and add pod update repo in build script (close #347)

snowplow/snowplow-objc-tracker,snowplow/snowplow-objc-tracker,snowplow/snowplow-objc-tracker,snowplow/snowplow-objc-tracker