BLD: Added debug to conda

Listing conda packages allows us to determine what changes have occurred
from one travis build to the next in terms of the conda packages
installed.
Merge pull request #477 from cpelley/conda_debug

Run ```conda list``` in travis build to simplify debugging.
Update setup.py
Merge branch 'v0.11.x'

* v0.11.x:
  Update setup.py
  BLD: Added debug to conda