WIP logo

[cmaumet]

By @satra! Discussed on the mailing list.

I am attaching the file in this issue so that we can easily retrieve it later on (while we are still working on the logo).

[satra]

adding link to svg (for editing): https://dl.dropbox.com/s/tcer6rhezn27hn9/nidm.svg

and regarding curves, perhaps we can clean up the synaptic spacing, so it shows better on the small png and also the intent was to be a little organic and brainy.