Added compile_JEMMA

compile_JEMMA it's a simple script linux file that:
 - Check if Java is installed. If not it will install Java 7
 - Check Java version: if in the pc is installed an old version(like Java 5) it will install Java 7
 - Check if Maven is installed: if it will install the latest version
 - Run the command "mvn clean package eclise:eclipse -D eclipse.pde install" to compile the project