BpiRouterOS: Source release on GitHub imminent

See https://github.com/BPI-SINOVOIP/bpirouteros.

See https://forum.banana-pi.org/t/bpirouter-v1-5-0-official-version-released-and-source-code-on-github/28086/9

Looking forward to seeing what SINOVOIP have done

Sources have been pushed it seems.

please discuss at here :