unroll btn margin-bottom

assets/css/bootswatch.min.css

 body{padding-top:50px}
 #banner{border-bottom:none}
 .page-header h1{font-size:4em}
-.btn{margin-bottom:3px}
 .bs-docs-section{margin-top:8em}
 footer{margin:5em 0}footer li{float:left;margin-right:1.5em;margin-bottom:1.5em}
 footer p{clear:left;margin-bottom:0}

assets/less/bootswatch.less

@@ -13,10 +13,6 @@ body {
 	}
 }
 
-.btn {
-	margin-bottom: 3px;
-}
-
 .bs-docs-section {
 	margin-top: 8em;
 }