add defgeneric declarations

fix Bug 2 of #2

fix the bug of cut

Update README.md

translate some comments

Update README.md

Merge pull request #3 from FemtoEmacs/master

Bug in cut fixed; tail cut still bugged

I changed the position of cut in tarai function

2 bugs in the ! cut were fixed, a 3rd remains

2 bugs in ! cut were fixed, a 3rd bug remains

add stream flush (2)

add stream flush

Update README.md

Create LICENSE