Add scala-js-plotlyjs facade (#494)

Author: mathieuleclaire

_data/library/jsfacades.yml

@@ -104,6 +104,10 @@
       url: https://github.com/zoepepper/scalajs-jsjoda
       desc: 'Static types for [js-joda](http://js-joda.github.io/js-joda/)'
       dep: '"com.zoepepper" %%% "scalajs-jsjoda" % "1.1.2"'
+    - name: scala-js-plotlyjs
+      url: https://github.com/openmole/scala-js-plotlyjs
+      desc: Scala-js facade for plotly-js
+      dep: '"org.openmole" %%% "scala-js-plotlyjs" % "1.5.1"'
 - topic: UI frameworks
   libraries:
     - name: scalajs-react