If you want to avoid the unwanted file extension to achieve SEO friendly URL use the following code snippet.

# Simple Mod Rewrite for clean url
Options +FollowSymLinks
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]

Godaddy glitches  

This above mentioned code works in other servers but for godaddy

just add the following code before mod re-write.

#Fix Rewrite
Options -Multiviews
Best of luck  
- Jay