[i18n] very beginning of application

[김 덕곤]

I want to practice translation job.

with a hello world program.

I think I can create myapp for example.

horde/myapp - my app home directory
horde/myapp/index.php - only shows 'helloworld' with horde menus(I mean 
using horde framework).
horde/myapp/locale/ko/myapp.po - translation.
(if it's possible,) simple preferences menu(like font select maybe?)

I think 'index.php' file must be created manually.

file 'myapp.po' can be created with some command.
and I update tranlation.

I update 'index.php' to add some more translation element.

then 'myapp.po' file can be updated automatically with some command.

Can anyone show me how?