Flexing Battery Holders - Customizable

This is a minor fork of Enif's [Flexing Battery Holder](http://www.thingiverse.com/thing:941081). It will produce a battery holder with an arbitrary number of cells in parallel and series.

- Thanks to [Infinigrove](http://www.thingiverse.com/infinigrove) for sorting out alternating symbols.

Find the latest version of this at GitHub: https://github.com/txoof/flexbatt