Changed pyzmq version to work with latest IPython.
Merge pull request #56 from jrrideout/pyzmq-fix

Changed pyzmq version to work with latest IPython.
Added support for the R biom-format package.

These changes are necessary for the CI system to test this part of the biom-format project.
Merge pull request #58 from jrrideout/r-biom

Added support for the R biom-format package.