Merge pull request plotly#586 from ropensci/update/plotlyjs-1.11.0

update to plotly 1.11.0

documentation changes for R CMD check

Merge pull request plotly#574 from ropensci/fix/axis-labels

use Plotly axis titles if not facetted

bump version; update news

bump version; update news

bump version; update news

bump version; update news

CRAN version 3.4.13

Update README.md