implement a wav play into pcap#98

Open

jinserk wants to merge 10 commits intomojolingo:developfrom

jinserk:develop

Commits on Sep 21, 2017

add play_audio instruction
Jinserk Baik
committed

Commits on Sep 22, 2017

add G711 encoding feature using ffi
Jinserk Baik
committed
update to make dtmf working
Jinserk Baik
committed
update README
Jinserk Baik
committed
update README
Jinserk Baik
committed
make nested yamls capable using yaml_extends
Jinserk Baik
committed
update readme
Jinserk Baik
committed
remove alaw codec from SDP
Jinserk Baik
committed
rollback nested yaml
Jinserk Baik
committed

Commits on Sep 26, 2017

change calls_per_second to call_rate and add call_period
Jinserk Baik
committed