native module: webpd pure data parser

[forresto]

https://github.com/sebpiq/WebPd

1. a .pd loader module
2. that can switch to an editing view: http://beraebeo.futupeeps.com/webpd/demos/simple-gui/simple-gui.html

simple-gui isn't fully ready, but in the meantime we can think about how different kinds of modules can define/switch to an edit view.

Big ?: how to route meemoo input -> webpd recieve ... thinking of a generic router module with data, name inputs and data out. then they all go into webpd module's one "recieve" input, and get routed to the named recieves in a function there.

[forresto]

@automata Let's make it native... then it might be easier to expose the buffers in the future if that is possible.

[forresto]

look at https://github.com/meemoo/iframework/blob/gh-pages/src/nodes/time-tween.js 's initializeModule to see how to use yepnope to load libs/pd.js