Documentation dev build installs from pyviz/label/dev (#411)

.travis.yml

@@ -68,9 +68,9 @@ jobs:
  <<: *default
  stage: docs
  # not possible to run all examples to build website using only defaults (see setup.py)
- env: DESC="docs" HV_DOC_HTML='true'
+ env: DESC="docs" HV_DOC_HTML='true' CHANS_DOC="-c pyviz -c conda-forge"
  script:
- - doit develop_install -c pyviz -c conda-forge -o doc
+ - doit develop_install $CHANS_DOC -o doc
  - geoviews fetch-data --path=examples
  - bokeh sampledata
  - nbsite generate-rst --org holoviz --project-name geoviews --offset 0
@@ -87,6 +87,7 @@ jobs:
 
  - <<: *doc_build
  stage: docs_dev
+ env: CHANS_DOC="-c pyviz/label/dev -c conda-forge"
  deploy:
  - provider: pages
  skip_cleanup: true