chore(release): bump webrtc plugin version to v1.0.0-beta.2
chore(release): bump webrtc plugin version to v1.0.0-beta.2

leancloud/js-realtime-sdk,leeyeh/js-realtime-sdk,leeyeh/js-realtime-sdk,leeyeh/js-realtime-sdk,leancloud/js-realtime-sdk