Add a "file browser" sample

[bitspittle]

This would show off autocompleting input() dynamically

Something like this:

Type a directory and press ENTER to accept it as the new active root:
> |subfolderA/
Active directory: ~/some/folder
subfolderA           
subfolderB
subfolderC
subfolderD
...

and if you type out subfolderC for example:

Type a directory and press ENTER to accept it as the new active root:
> subfolderC/|nestedFolderA
Active directory: ~/some/folder/subfolderC
nestedFolderA
nestedFolderB
...

You can of course use absolute and relative paths to escape from the active directory:

Type a directory and press ENTER to accept it as the new active root:
> ../..
Active directory: ~/
some
another

This example will also benefit from us adding keyboard shortcuts for clearing the full line and deleting last word (which eats up all letters and digits, dropping us as the previously typed "/". See also Bug #51

[bitspittle]

Decided against it, too many other things on my plate. The input example already shows off autocompletion so I think we're OK.