set main callback async (should help #6)

MarkdownLivePreview.py

@@ -19,7 +19,7 @@ class MarkdownLivePreviewListener(sublime_plugin.EventListener):
             preview = get_view_from_id(window, id)
             if id is None or preview is None:
                 preview = create_preview(view)
-                sublime.set_timeout(lambda: show_html(view, preview), 1000)
+                sublime.set_timeout_async(lambda: show_html(view, preview), 1000)
             else:
                 show_html(view, preview)
 

sample.md

@@ -10,9 +10,4 @@ Hope you'll enjoy using MarkdownLivePreview!
 
 ![image](http://local.dev/tests/php/img/image-php.php)
 
-hello world
-
-This is a test dfsdf hello world, this is pretty cool.
-
-This is a test
-
+this is a tets