Fix document of  doc/compile/README.md

Difference between Present form and Present progressive form.

```
Present form … everyday habits, such as the fact of universal
I use a computer after dinner. 私は夕食後コンピュータを使う。

Present progressive form … behavior you're doing now(to use the now often)
I'm using a computer now. 　私は今コンピュータを使っています。
```

 in Japanese explain that in the following:
http://english.005net.com/yoten/shinko.php