Revert "remove return Plotly"

This reverts commit 1fc1c03.

Author: archmoj

Diff for: lib/index-basic.js

@@ -15,5 +15,4 @@ Plotly.register([
     require('./pie')
 ]);
 
-require('./register_extra')(Plotly);
-module.exports = Plotly;
+module.exports = require('./register_extra')(Plotly);

Diff for: lib/index-cartesian.js

@@ -24,5 +24,4 @@ Plotly.register([
     require('./violin')
 ]);
 
-require('./register_extra')(Plotly);
-module.exports = Plotly;
+module.exports = require('./register_extra')(Plotly);

Diff for: lib/index-finance.js

@@ -22,5 +22,4 @@ Plotly.register([
     require('./indicator')
 ]);
 
-require('./register_extra')(Plotly);
-module.exports = Plotly;
+module.exports = require('./register_extra')(Plotly);

Diff for: lib/index-geo.js

@@ -15,5 +15,4 @@ Plotly.register([
     require('./choropleth')
 ]);
 
-require('./register_extra')(Plotly);
-module.exports = Plotly;
+module.exports = require('./register_extra')(Plotly);

Diff for: lib/index-gl2d.js

@@ -17,5 +17,4 @@ Plotly.register([
     require('./parcoords')
 ]);
 
-require('./register_extra')(Plotly);
-module.exports = Plotly;
+module.exports = require('./register_extra')(Plotly);

Diff for: lib/index-gl3d.js

@@ -20,5 +20,4 @@ Plotly.register([
     require('./streamtube')
 ]);
 
-require('./register_extra')(Plotly);
-module.exports = Plotly;
+module.exports = require('./register_extra')(Plotly);

Diff for: lib/index-mapbox.js

@@ -16,5 +16,4 @@ Plotly.register([
     require('./densitymapbox')
 ]);
 
-require('./register_extra')(Plotly);
-module.exports = Plotly;
+module.exports = require('./register_extra')(Plotly);

Diff for: lib/index-strict.js

@@ -56,5 +56,4 @@ Plotly.register([
     require('./barpolar')
 ]);
 
-require('./register_extra')(Plotly);
-module.exports = Plotly;
+module.exports = require('./register_extra')(Plotly);

Diff for: lib/index.js

@@ -71,5 +71,4 @@ Plotly.register([
     require('./barpolar')
 ]);
 
-require('./register_extra')(Plotly);
-module.exports = Plotly;
+module.exports = require('./register_extra')(Plotly);

Diff for: lib/register_extra.js

@@ -30,4 +30,6 @@ module.exports = function registerExtra(Plotly) {
     Plotly.register([
         require('./calendars')
     ]);
+
+    return Plotly;
 };