install webrtc2sip on ubuntu

gistfile1.sh

#!/bin/bash

#http://linux.autostatic.com/installing-webrtc2sip-on-ubuntu-1204#install_packages

sudo su

# install
apt-get update
apt-get install -y python-software-properties
add-apt-repository ppa:autostatic/doubango
apt-get update
apt-get install webrtc2sip

# generate cert
cd /etc/webrtc2sip
sudo openssl req -new > new.ssl.csr
sudo openssl rsa -in privkey.pem -out new.cert.key
sudo openssl x509 -in new.ssl.csr -out new.cert.cert -req -signkey new.cert.key -days 999999
sudo mkdir -p /etc/ssl/certs/
sudo cp new.cert.cert /etc/ssl/certs/server.crt
sudo chmod 640 /etc/ssl/certs/server.crt
sudo mkdir -p /etc/ssl/private/
sudo cp new.cert.key /etc/ssl/private/server.key
sudo chmod 640 /etc/ssl/private/server.key

# enable service
cd /etc/default
cp webrtc2sip webrtc2sip.bak
cat <<EOF > webrtc2sip
# webrtc2sip startup options
#

# Set to yes to enable webrtc2sip, once configured properly.
RUN_WEBRTC2SIP=yes

# User to run as
USER=root

# Group to run as
GROUP=root


OPTIONS=--config=/etc/webrtc2sip/config.xml
EOF

#configure
cd /etc/webrtc2sip
cp config.xml config.bak.xml
cat <<EOF > config.xml
<?xml version="1.0" encoding="utf-8" ?>
<!-- Please check the technical guide (http://webrtc2sip.org/technical-guide-1.0.pdf) for more information on how to adjust this file -->
<config>

  <debug-level>INFO</debug-level>

  <transport>udp;*;10060</transport>
  <transport>ws;*;10060</transport>
  <transport>wss;*;10062</transport>
  <!--transport>tcp;*;10063</transport-->
  <!--transport>tls;*;10064</transport-->

  <enable-rtp-symetric>yes</enable-rtp-symetric>
  <enable-100rel>no</enable-100rel>
  <enable-media-coder>yes</enable-media-coder>
  <enable-videojb>yes</enable-videojb>
  <video-size-pref>vga</video-size-pref>
  <rtp-buffsize>65535</rtp-buffsize>
  <avpf-tail-length>100;400</avpf-tail-length>
  <srtp-mode>optional</srtp-mode>
  <srtp-type>sdes;dtls</srtp-type>
  <dtmf-type>rfc4733</dtmf-type>

  <codecs>pcma;pcmu;gsm;vp8;h264-bp;h264-mp;h263;h263+</codecs>
  <codec-opus-maxrates>48000;48000</codec-opus-maxrates>

  <stun-server>stun.l.google.com;19302;;</stun-server>
  <enable-icestun>yes</enable-icestun>

  <max-fds>-1</max-fds>

  <!--nameserver>66.66.66.6</nameserver-->

  <ssl-certificates>
    /etc/ssl/private/server.key;
    /etc/ssl/certs/server.crt;
    ;
    no
  </ssl-certificates>

  <!-- ***CLICK-TO-CALL SERVICE*** -->

  <transport>c2c;*;10070</transport>
  <transport>c2cs;*;10072</transport>
  <database>sqlite;*</database>
  <!--account-mail>smtps;*;*;auth.smtp.1and1.fr;465;noreply@example.com;noreply@example.com;mysecret</account-mail-->
  <!--account-sip-caller>*;sip:a@example.com;a;example.com;mysecret</account-sip-caller-->

</config>
EOF


# run
service webrtc2sip start

can you help me to install webrtc2sip on my server?
please add my skype glavalle2011
thanks