.htaccess

<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteBase /prerender-test/

    # Virtual/pushState URIs (requests not matching an existing file get forwarded to index.html)
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteRule .* index.html [L]

    <IfModule mod_proxy_http.c>
        # Enable prerendering for .html and directory index files
        RewriteCond %{HTTP_USER_AGENT} googlebot|yahoo|bingbot|baiduspider [NC,OR]
        RewriteCond %{QUERY_STRING} _escaped_fragment_|prerender=1
        RewriteCond %{HTTP_USER_AGENT} !^Prerender
        RewriteRule ^(.*\.html)?$ http://prerender.herokuapp.com/http://www.yourdomain.com/prerender-test/$1 [P,L]
    </IfModule>
</IfModule>

# Optionally add a ProxyPassReverse directive to ensure that 301/302 redirects
# issued by the prerender service are correctly forwarded to the client.
# Note that this must be located in your Apache config rather than .htaccess

# <IfModule mod_proxy_http.c>
#     ProxyPassReverse /prerender-test/ http://prerender.herokuapp.com/http://www.yourdomain.com/prerender-test/
# </IfModule>