try this: If you want the logo image
1) above the blog title/menu replace the 'banner-br' div in the 'header.php' with
HTML Code:
<div id="logo-img" class="col12 row">
<a href="<?php echo home_url(); ?>">
<img src="http://www.YourDomainNameHere.com/wp-content/themes/montezuma/images/logo.png">
</a>
</div>
<div id="banner-bg" class="cf">
<div id="banner" class="row">
<div id="logo-area" class="col5">
<<?php bfa_if_front_else( 'h1', 'h3' ); ?> id="sitetitle">
<a href="<?php echo home_url(); ?>"><?php bloginfo( 'name' ); ?></a>
<<?php bfa_if_front_else( 'h1', 'h3' ); ?>>
<p id="tagline"><?php bloginfo( 'description' ); ?></p>
</div>
<?php wp_nav_menu( array(
'container' => 'nav',
'container_class' => 'menu-wrapper col7',
'container_id' => 'menu1-wrapper',
'menu_id' => 'menu1',
'menu_class' => 'cf menu',
'theme_location' => 'menu1',
'fallback_cb' => 'bfa_page_menu'
) ); ?>
</div>
</div>
2) if you want it inline with the title and menu use this (adjusting the columns to your needs)
HTML Code:
<div id="banner-bg" class="cf">
<div id="banner" class="row">
<div id="logo-img" class="col2">
<a href="<?php echo home_url(); ?>">
<img src="http://www.YourDomainNameHere.com/wp-content/themes/montezuma/images/logo.png">
</a>
</div>
<div id="logo-area" class="col3">
<<?php bfa_if_front_else( 'h1', 'h3' ); ?> id="sitetitle">
<a href="<?php echo home_url(); ?>"><?php bloginfo( 'name' ); ?></a>
<<?php bfa_if_front_else( 'h1', 'h3' ); ?>>
<p id="tagline"><?php bloginfo( 'description' ); ?></p>
</div>
<?php wp_nav_menu( array(
'container' => 'nav',
'container_class' => 'menu-wrapper col7',
'container_id' => 'menu1-wrapper',
'menu_id' => 'menu1',
'menu_class' => 'cf menu',
'theme_location' => 'menu1',
'fallback_cb' => 'bfa_page_menu'
) ); ?>
</div>
</div>