Start development instruction document

Instructions on how to setup development environment for BBB 1.1.

DEVELOPMENT.md

+## Install OpenJDK 8
+
+```
+sudo add-apt-repository ppa:openjdk-r/ppa
+sudo apt-get update
+sudo apt-get install openjdk-8-jdk
+```
+
+Change the default jre. Choose Java 8.
+
+```
+sudo update-alternatives --config java
+```
+
+Change the default jdk. Choose Jdk8
+
+```
+sudo update-alternatives --config javac
+```
+
+## Environment Variables
+
+Edit `~/.profile` and change `JAVA_HOME`
+
+```
+export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
+```
+
+Save the file and refresh environment vars.
+
+```
+source ~/.profile
+```
+
+## Update Development Tools
+
+### Install Gradle
+
+Install gradle-2.12
+
+### Install Grails
+
+Install grails-2.5.2
+
+### Install Maven
+
+Install apache-maven-3.3.3
+
+Edit ```~/.profile``` to point to the above versions
+
+## Setup Red5
+
+```
+cd /usr/share
+
+# Make a backup of the deployed red5
+
+sudo mv red5 red5-orig
+
+# Symlink red5 to old red5
+
+sudo ln -s red5-orig red5
+```
+
+## Build Red5
+
+Build red5-parent 
+
+```
+cd ~/dev
+git clone git@github.com:bigbluebutton/red5-parent.git
+cd red5-parent/
+git checkout snapshot-mar-30-2016
+mvn install
+```
+
+Build red5-io
+
+```
+cd ~/dev/tools
+git clone git@github.com:bigbluebutton/red5-io.git
+cd red5-io
+./bbb-build.sh
+```
+
+Build red5-server-common
+
+```
+cd ~/dev/tools
+git clone git@github.com:bigbluebutton/red5-server-common.git
+cd red5-server-common
+./bbb-build.sh
+```
+
+Build red5-server
+
+```
+cd ~/dev/tools
+git clone git@github.com:bigbluebutton/red5-server.git
+cd red5-server
+./build-red5.sh
+
+# Deploy red5, this will copy the new red5 to /usr/share
+# and modify the symlink you created above.
+
+./deploy.sh
+```
+
+
+
+## Build client
+
+```
+# Copy config.xml.template
+cd ~/dev/tools/bigbluebutton/bigbluebutton-client
+cp resources/config.xml.template src/conf/config.xml
+```
+
+Edit `config.xml`. Remove deskshare and leave screenshare module.
+Make sure that you have replaced `HOST` with you BBB IP.
+
+## Setup nginx
+
+Create file `/etc/bigbluebutton/nginx/screenshare.nginx` and add the following:
+
+```
+# Handle desktop sharing.  Forwards
+# requests to Red5 on port 5080.
+location /screenshare {
+  proxy_pass         http://127.0.0.1:5080;
+  proxy_redirect     default;
+  proxy_set_header   X-Forwarded-For   $proxy_add_x_forwarded_for;
+  client_max_body_size       10m;
+  client_body_buffer_size    128k;
+  proxy_connect_timeout      90;
+  proxy_send_timeout         90;
+  proxy_read_timeout         90;
+  proxy_buffer_size          4k;
+  proxy_buffers              4 32k;
+  proxy_busy_buffers_size    64k;
+  proxy_temp_file_write_size 64k;
+  include    fastcgi_params;
+}
+```
+