Characters container generator

You may input any text to generate your own container. For example, π, root of 2, and so on.

The [Maker Customizer](http://www.thingiverse.com/apps/customizer/run?thing_id=1264478) of this thing currently uses the `character_container_without_projection` module. The module is fast if your text has more words.

The .scad file contains a `character_container` module with a smoother visual effect. Download and use the module if your words are little. The `character_container` module is slow b