Added support version field for ios plugin
Added support version field for ios plugin

dialogflow/dialogflow-cordova-client,api-ai/api-ai-cordova,api-ai/api-ai-cordova,jozhao/api-ai-cordova,dialogflow/dialogflow-cordova-client,dialogflow/dialogflow-cordova-client,dialogflow/dialogflow-cordova-client,jozhao/api-ai-cordova,api-ai/api-ai-cordova,jozhao/api-ai-cordova