Added Linux dependency install script

Builds/Linux/build/install_dependencies.sh

+#!/bin/bash
+
+# install g++
+apt-get -y install build-essential
+
+# install Juce dependencies
+apt-get -y install freeglut3-dev libfreetype6-dev libxinerama-dev libxcursor-dev libasound2-dev
+
+# install GUI dependencies
+apt-get -y install libftdi-dev libftgl-dev
+