easy to depart code and other text markup

[JiaYu Zhang]

the following markdown code:

### title

#### subtitle
+ list item A
+ list item B
+ list item C

this is some text here

```javascript
//this is some javascript code here
function test(){
	console.log('test javascript code')
}

```

this is some other text 

rendered as 

title

subtitle

• list item A
• list item B
• list item C

this is some text here

//this is some javascript code here
function test(){
	console.log('test javascript code')
}

this is some other text

and it is not easy to tell the texts from the code