count nack\pli\firs

1. video down 统计信息中的如下属性：

googNacksSent、googPlisSent、googFirsSent

注：来源于 video recv

2. video up 统计信息中的如下属性：

googNacksReceived、googPlisReceived、googFirsReceived

注：来源与 video send

fix android/ios/web

v1.0.10

fix: result.bytesReceived !== '0'

support js bradage on android

v1.0.9

refactor: parameters.js just check and warn not throw

1.0.8

fix: kilobytes is zero

1.0.7

支持packetLostRate