Add Turbo color scheme

Author: maherma-adg

src/scales/AbstractScale.js

@@ -15,6 +15,7 @@ import {
     interpolateOranges as d3_interpolateOranges,
     interpolatePurples as d3_interpolatePurples,
     interpolateReds as d3_interpolateReds,
+    interpolateTurbo as d3_interpolateTurbo,
     interpolateViridis as d3_interpolateViridis,
     interpolateInferno as d3_interpolateInferno,
     interpolateMagma as d3_interpolateMagma,
@@ -65,6 +66,7 @@ export default class AbstractScale extends AbstractScaleDispatcher {
         "Oranges": d3_interpolateOranges,
         "Purples": d3_interpolatePurples,
         "Reds": d3_interpolateReds,
+        "Turbo": d3_interpolateTurbo,
         "Viridis": d3_interpolateViridis,
         "Inferno": d3_interpolateInferno,
         "Magma": d3_interpolateMagma,
@@ -281,4 +283,4 @@ export default class AbstractScale extends AbstractScaleDispatcher {
         this.setDomainFiltered(this._domain.slice());
     }
 
-}
+}