README cleanup: Consistent comment prefixing `////` for raw SQL example output.

Sure, I'm happy to give it another pass.

Cheers 

On Sep 13, 2014, at 1:53 AM, Jinzhu <notifications@github.com> wrote:

> In README.md:
> 
> > @@ -721,8 +721,8 @@ Scan results into another struct.
> >  
> >  ```go
> >  type Result struct {
> > -	Name string
> > -	Age  int
> > +  Name string
> > +  Age  int
> I think we should always use tab to intent go code? if there are any places not using it, we should change that part, but not the right one?
> 
> —
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