added condition to stop and init capture#677

cnx-caiobarroso wants to merge 5 commits intoopentok:developopentok/opentok-react-native:developfrom

cnx-caiobarroso:fix-stopCapture-initCapture-crashlytics-logcnx-caiobarroso/opentok-react-native:fix-stopCapture-initCapture-crashlytics-logCopy head branch name to clipboard