Nested if else

I learned how to use source code markup! It's pretty useable. Previously I had tried to paste code with `inline` syntax.
So this nested conditions

``` moonscript
if 1
 if 2
 3
 elseif 4
 5
else 6
```

Become to this:

``` lua
if 1 then
 if 2 then
 return 3
 elseif 4 then
 return 5
 else
 return 6
 end
end
```

It is confusing, fix please
