Update Vimdoc based on Lua source

doc/tags

@@ -1,36 +1,4 @@
-M.await_term_cmd()	live-preview.txt	/*M.await_term_cmd()*
-M.check()	live-preview.txt	/*M.check()*
-M.client()	live-preview.txt	/*M.client()*
-M.generate()	live-preview.txt	/*M.generate()*
-M.get()	live-preview.txt	/*M.get()*
-M.get_parent_path()	live-preview.txt	/*M.get_parent_path()*
-M.get_path_lua_file()	live-preview.txt	/*M.get_path_lua_file()*
-M.get_plugin_path()	live-preview.txt	/*M.get_plugin_path()*
-M.handshake()	live-preview.txt	/*M.handshake()*
-M.is_compatible()	live-preview.txt	/*M.is_compatible()*
-M.kill_port()	live-preview.txt	/*M.kill_port()*
-M.mime	live-preview.txt	/*M.mime*
-M.open_browser()	live-preview.txt	/*M.open_browser()*
-M.preview_file()	live-preview.txt	/*M.preview_file()*
-M.request()	live-preview.txt	/*M.request()*
-M.send()	live-preview.txt	/*M.send()*
-M.send_http_response()	live-preview.txt	/*M.send_http_response()*
-M.send_json()	live-preview.txt	/*M.send_json()*
-M.serve_file()	live-preview.txt	/*M.serve_file()*
-M.setup()	live-preview.txt	/*M.setup()*
-M.sha1()	live-preview.txt	/*M.sha1()*
-M.stop_preview()	live-preview.txt	/*M.stop_preview()*
-M.supported_filetype()	live-preview.txt	/*M.supported_filetype()*
-M.term_cmd()	live-preview.txt	/*M.term_cmd()*
-M.uv_read_file()	live-preview.txt	/*M.uv_read_file()*
-M.uv_write_file()	live-preview.txt	/*M.uv_write_file()*
-Server	live-preview.txt	/*Server*
 Server	livepreview.txt	/*Server*
-Server:new()	live-preview.txt	/*Server:new()*
-Server:routes()	live-preview.txt	/*Server:routes()*
-Server:start()	live-preview.txt	/*Server:start()*
-Server:stop()	live-preview.txt	/*Server:stop()*
-Server:watch_dir()	live-preview.txt	/*Server:watch_dir()*
 livepreview	livepreview.txt	/*livepreview*
 livepreview.content_type	livepreview.txt	/*livepreview.content_type*
 livepreview.etag	livepreview.txt	/*livepreview.etag*
@@ -70,5 +38,3 @@ livepreview.utils.term_cmd()	livepreview.txt	/*livepreview.utils.term_cmd()*
 livepreview.utils.uv_read_file()	livepreview.txt	/*livepreview.utils.uv_read_file()*
 livepreview.utils.uv_write_file()	livepreview.txt	/*livepreview.utils.uv_write_file()*
 livepreview.websocket	livepreview.txt	/*livepreview.websocket*
-send_scroll()	live-preview.txt	/*send_scroll()*
-spec()	live-preview.txt	/*spec()*