added flsk_nginx installation

Author: errnair

installation_scripts/install_flask_nginx.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+#################################################
+# #
+# A shell script to install Nginx and Flask #
+# #
+#################################################
+
+# check if the current user is root
+if [[ $(/usr/bin/id -u) != "0" ]]; then
+ echo -e "This looks like a 'non-root' user.\nPlease switch to 'root' and run the script again."
+ exit
+fi
+
+prerequisites(){
+ yum update -y
+
+}