Update Cocoapods version to 1.4.0
Update Cocoapods version to 1.4.0

braintree/braintree_ios,apascual/braintree_ios,billCTG/braintree_ios,billCTG/braintree_ios,billCTG/braintree_ios,billCTG/braintree_ios,braintree/braintree_ios,apascual/braintree_ios,braintree/braintree_ios,apascual/braintree_ios,apascual/braintree_ios,billCTG/braintree_ios,braintree/braintree_ios