helloworld.xml

<?xml version="1.0" encoding="utf-8"?>

<extension type="component" version="2.5.0" method="upgrade">
    <name>Hello World</name>
    <description>Introduction to the Joomla Installation Package</description>
    <version>0.0.6</version>
    <install>
        <sql>
            <file driver="mysqli" charset="utf8">sql/install.mysql.utf8.sql</file>
        </sql>
    </install>
    <uninstall>
        <sql>
            <file driver="mysqli" charset="utf8">sql/uninstall.mysql.utf8.sql</file>
        </sql>
    </uninstall>
    <update>
        <schemas>
            <schemapath type="mysqli">sql/updates/mysql</schemapath>
        </schemas>
    </update>

    <files folder="site">
        <filename>index.html</filename>
        <filename>helloworld.php</filename>
        <filename>controller.php</filename>
        <folder>views</folder>
        <folder>models</folder>
    </files>

    <administration>
        <menu>Hello World!</menu>
        <files folder="admin">
            <filename>index.html</filename>
            <filename>helloworld.php</filename>
            <folder>sql</folder>
            <folder>models</folder>
            <folder>tables</folder>
        </files>
    </administration>
</extension>