Im a bit of noob, i want to change the title text to an image : I need some help. i want to change the following text logo into a logo, currently used by a theme on wordpress

It looks like this now:[header image on website][1]

any suggestions, my logo is currently on the server at: content/uploads/2016/07/cropped-Site_Logo-1.png 

`<div id="ribbon" class="span12 center none">
            <div class="navbar navbar-inverse navbar-fixed-top">
                <div class="navbar-inner">
                    <div class="container">
                       <h1 class="text_logo"><a href="/wp-content/uploads/2016/07/cropped-Site_Logo-1.png">StrtUp</a></h1>
                        <a class="btn btn-navbar" data-toggle="collapse" data-target="#mobile_menu">
                            <span class="icon-bar"></span>
                            <span class="icon-bar"></span>
                            <span class="icon-bar"></span>
                        </a>
                        <div class="clear"></div>`


  [1]: http://i.stack.imgur.com/2Xi1G.png