声网的demo 做了信令拨号通话视频（已修正为studio工程）

so库从视频处全部copy过来，目录： app/libs/.jar app/src/main/jniLibs/arm, 对应的库从视频demo拷贝黏贴此处，so太大上传不了
onFirstRemoteVideoDecoded 的回调修改成在UI线程中执行
enableMediaCertificate 修改成true
appID 和 certificate去官网注册产生

操作步骤

DONE

Name		Name	Last commit message	Last commit date
Latest commit History 7 Commits
app		app
.gitignore		.gitignore
README.md		README.md
build.gradle		build.gradle
gradlew		gradlew
gradlew.bat		gradlew.bat
settings.gradle		settings.gradle