DOC+RF: rename FIAC stuff to ds105 stuff

Continue fixing up ds105 example script for ds105 data instead of FIAC.
DOC: fix docstring for design functions

And change mutable list default arguments to tuples.
Merge pull request #288 from matthew-brett/ds105-example

MRG: rename FIAC stuff to ds105 stuff

Continue fixing up ds105 example script for ds105 data instead of FIAC.
DOC: more design docstring fixes

Some typos; change wording for default arguments.
Merge pull request #289 from matthew-brett/design-docstring-edits

DOC: fix docstring for design functions

And change mutable list default arguments to tuples.
Merge branch 'master' of https://github.com/nipy/nipy into auto-get-coords