.travis.yml: Switch from installing `conda-server` to `anaconda-client` for uploading binaries.
.travis.yml: Switch from installing `conda-server` to `anaconda-client` for uploading binaries.

DudLab/splauncher,DudLab/splauncher,jakirkham/splauncher,nanshe-org/splauncher,nanshe-org/splauncher,jakirkham/splauncher