Bootstrap to Joomla Template

While making a bootstrap template for joomla, I wrote the next templateDtails.xml code. When trying to install it on joomla, an error happend. The file template.zip couldn't be uploaded. I used and xml validator, it seems that there is no mistake and the dtd that I use is one of the joomlat officail dtds. I want your help to figure out the problem here in my xml code:

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE install PUBLIC "-//Joomla! 3.2//DTD template 1.0//EN"       "http://ift.tt/1rxZf10">
<extension 
version="3.0" 
type="template"
method="upgrade"
client="site">
<name>Jumbotron</name>
<creationDate>01-25-2014</creationDate>
<updateDate>01-25-2014</updateDate>
<version>1.1.0</version>
<author>xxxx xxxx</author>
<authorUrl></authorUrl>
<copyright>AS Designing</copyright>
<license>GNU/GPL</license>
<description>A bootstrap template for joomla.</description>
<files>
    <folder>css</folder>
    <folder>fonts</folder>
    <folder>html</folder>
    <folder>images</folder>
    <folder>js</folder>
    <filename>index.php<filename>
    <filename>index.html</filename>
    <filename>company.ico</filename>
    <filename>templateDetails.xml</filename>        
</files>

<position>
    <position>menu</position>
    <position>showcase</position>
    <position>box1</position>
    <position>box2</position>
    <position>box3</position>
</position>

<config>
    <fields name="params">
        <fieldset name="general" label="general">
            <field name="logo_text"
                   type="text
                   label="Logo Text"
                   description="Enter your logo text"/>

            <field name="copyright_text"
                   type="text
                   label="Copyright Text"
                   description="Enter your copyright text"/>
        </fieldset>
    </fields>

</config>
</extension>