Created README file with short description

README.md

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 # jacktrip-webrtc
-JackTrip meets WebRTC
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+JackTrip WebRTC is an HTML5 implementation of [Jacktrip](https://ccrma.stanford.edu/software/jacktrip/) for the web browser.
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+Multi-machine network music performance over the Internet is achieved using high quality, uncompressed, and ultra-low delay audio signal streaming. WebRTC [MediaStream](https://developer.mozilla.org/en-US/docs/Web/API/MediaStream) is routed through the [RTCDataChannel](https://developer.mozilla.org/en-US/docs/Web/API/RTCDataChannel) in order to bypass processing (i.e., encoding) and buffering delay of the [RTCPeerConnection](https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection) media channel.
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