hdf5: where are you? (brew)

On yosemite. I want to install octave: but hdf5 can not be found.

00:48:51/shared $brew tap homebrew/science
Warning: Already tapped!

So I went to try to insstall hdf5 directly:

wget http://ift.tt/14Pg4vH
$ mv hdf5.rb /usr/local/Library/Formula
$ 00:47:59/shared $ll /usr/local/Library/Formula/hdf5.rb
-rw-r--r--     1 steve  staff   70014 Jan 13 00:46 hdf5.rb
$ brew install hdf5.rb
Error: No available formula for hdf5
Searching formulae...
hdf5
Searching taps..