HTML5 Barebones Template Generator Script

#!/bin/bash
# HTML5 Barebones Template Generator Script
# Developed by Ryan K. Clark
# For more scripts, please visit http://www.tehnewdev.tumblr.com/
# Version 1.0

clear

echo "Type a name for your file."
sleep 1
read file

if [[ -z $file ]]
then
echo "Error 0x001: Not a valid filename."
exit
elif [[ $file =~ \.html$ ]]
then
echo "Error 0x002: $file.html is invalid."
exit
else
clear
echo "Generating $file.html, please wait..."
sleep 1
fi

echo "<!DOCTYPE html>" > $file.html
echo -e "" >> $file.html
echo "<html>" >> $file.html
echo -e "\t<head>" >> $file.html
echo -e "\t\t<meta name=\"author\" content=\"HTML5 Barebones Template Generator\" />" >> $file.html
echo -e "\t\t<meta name=\"description\" content=\"HTML5 Barebones Template Generator\" />" >> $file.html
echo -e "\t\t<meta name=\"keywords\" content=\"HTML5, Barebones, Template, Generator\" />" >> $file.html
echo -e "\t\t<meta charset=\"UTF-8\" />" >> $file.html
echo -e "\t\t<title>Untitled Document</title>" >> $file.html
echo -e "\t</head>" >> $file.html
echo -e "\t<body>" >> $file.html
echo -e "\t\t<!-- Insert content here... -->" >> $file.html
echo -e "\t</body>" >> $file.html
echo -n "</html>" >> $file.html

echo "Generation Completed! $file.html is located in: "; pwd