code blocks md code example

Example 1: code blocks md

```
function test() {
  console.log("notice the blank line before this function?");
}
```

Example 2: markdown code snippet

```javascript
var s = "JavaScript syntax highlighting";
alert(s);
```
 
```python
s = "Python syntax highlighting"
print s
```
 
```
No language indicated, so no syntax highlighting. 
But let's throw in a <b>tag</b>.
```