You could actually add it to wordpress theme:
1) Converte your index.php into a page template for the theme in wordpress (more information in: http://codex.wordpress.org/Page_Templates )
2) Upload the files to your theme directory.
3) Create a page named “launch” in your wordpress administration. Select the template page your just created, save and its done 😉
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solved How to upload my webpage files into wordpress? [closed]