adding temp idea for subnav to docs

lib/tabs-pills.less

@@ -259,3 +259,35 @@
     background-color: @grayDark;
   }
 }
+
+
+// Subnav
+// STILL A WIP
+.subnav {
+  position: relative;
+  #gradient > .vertical(#f5f5f5, #eeeeee);
+  .border-radius(6px);
+  a {
+    padding: 10px 15px;
+    color: @linkColor;
+    text-shadow: 0 1px 0 #fff;
+    border-left: 1px solid #f9f9f9;
+    border-right: 1px solid #e5e5e5;
+    &:hover {
+      color: @linkColorHover;
+      background-color: #eee;
+    }
+  }
+  li:first-child a {
+    border-left: 0;
+    .border-radius(6px 0 0 6px);
+  }
+  li:last-child a {
+    border-right: 0;
+    .border-radius(0 6px 6px 0);
+  }
+  ul .active > a {
+    color: @grayDark;
+    background-color: #eee;
+  }
+}