Minor changes in deploy

ci/deploy_anaconda.sh

 #!/bin/bash
-anaconda -t $CONDA_REPO_TOKEN upload -l $TRAVIS_BRANCH --force "$(ls $HOME/miniconda/conda-bld/${TRAVIS_OS_NAME}-64/*.tar.bz2)"
+if [[ $TRAVIS_TAG == "" ]]; then LABEL="-l $TRAVIS_BRANCH"; fi
+anaconda -t $CONDA_REPO_TOKEN upload $LABEL --force "$(ls $HOME/miniconda/conda-bld/${TRAVIS_OS_NAME}-64/*.tar.bz2)"