.travis.yml: Include a conda recipe to build the package. This build will run the tests, as well. Also, use binaries for `boost`, `numpy`, and `vigra`. This allows for a container-based build.
.travis.yml: Include a conda recipe to build the package. This build will run the tests, as well. Also, use binaries for `boost`, `numpy`, and `vigra`. This allows for a container-based build.

jakirkham/rank_filter,DudLab/rank_filter,jakirkham/rank_filter,nanshe-org/rank_filter,jakirkham/rank_filter,DudLab/rank_filter,DudLab/rank_filter,nanshe-org/rank_filter,nanshe-org/rank_filter