--lib: Folder structure is not preserved if it is intended to import sub-directories in REVEAL_PATH/lib

[cszach]

Description

Currently, the handle for $libfile when it's a directory is incorrectly implemented. The case in which $libfile is a folder to import is neglected.

Steps to reproduce

This is just one example.

If we run:

reveal-init --lib font/ font/league-gothic - my_slides

then ls my_slides/lib/ gives:

font  league-gothic

It is clear that we want the league-gothic directory to be inside the font directory, but in this case it is not.

Environment

• Program version: reveal-init 3.0 RC (release candidate), however the bug has existed probably since 131debd.
• Shell interpreter: Bash