After installing the script, you go to 'Site settings > configure site' option. There you will see the following option:
Use mod_rewrite
() Yes (Need to change 'htaccess.txt' to '.htaccess' OR copy the code in 'htaccess.txt' to already existing '.htaccess')
() No
Select 'Yes' option > Save.
After saving the settings > ftp into your 'rvp' folder. You will see a file called 'htaccess.txt'. Rename it as '.htaccess'.
Note: If you have installed the script in root folder, then you might see an existing .htaccess file there. So just add the contents of 'htaccess.txt' of rvp folder to already existing '.htaccess'.
Now the URLs are changed from:
http://yoursite.com/rvp/index.php/folder-name/article-title/
to:
http://yoursite.com/rvp/folder-name/article-title/
'index.php' is removed from URLs by mod_rewrite.
NOTE: Whenever you upgrade your script in future, make sure to add this .htaccess to .htaccess file.