Bug fix: removes special character limitation but still impossible to put ‘...

Bug fix: removes special character limitation but still impossible to put ‘ due to makefile limitation

live_exam_os/config/03-post_install/3000-nexus_exam.sh

@@ -4,7 +4,7 @@
 
 echo " [Compiling nexus-exam...]"
 pushd ..  > /dev/null
-run_command make build_nexus-exam SERVER=$SERVER CERT=$CERT EXAM_USER=$EXAM_USER EXAM_PWD=$EXAM_PWD
+run_command make build_nexus-exam
 if [[ "$ROOTFS_DIR" != /* ]]; then
   run_command mkdir -p live_exam_os/$ROOTFS_DIR/usr/local/bin
   run_command cp build/nexus-exam live_exam_os/$ROOTFS_DIR/usr/local/bin/nexus-exam