little changes
Merge branch 'master' of github.com:antolikjan/mozaik
Replaced dependency on Topographica with one on imagen (which has fewer dependencies)
more changes to parametrization and parameter search, should work now
Merge pull request #8 from apdavison/master

 Replaced dependency on Topographica with one on imagen
updated instructions to remove Topographica dependency
solved mergeconflicts in README.md
further changes to accomodate pyNN 0.8
further bug squishing due to pynn 0.8 conversion
Fixed a problem when mpi4py not available
Fixed some problems caused when switching to imagen module