Split out build from doPublish to facilitate local development

Author: nselikoff

package.json

@@ -25,7 +25,8 @@
     "test:jest": "jest",
     "test": "npm run test:eslint && npm run test:prettier && npm run test:jest",
     "clean": "rm -rf __tests__ PivotTable.js* PivotTableUI.js* PlotlyRenderers.js* TableRenderers.js* Utilities.js* pivottable.css",
-    "doPublish": "npm run clean && cp src/pivottable.css . && babel src --out-dir=. --source-maps --presets=env,react --plugins babel-plugin-add-module-exports && npm publish",
+    "build": "npm run clean && cp src/pivottable.css . && babel src --out-dir=. --source-maps --presets=env,react --plugins babel-plugin-add-module-exports",
+    "doPublish": "npm run build && npm publish",
     "postpublish": "npm run clean",
     "deploy": "webpack -p && mv bundle.js examples && cd examples && git init && git add . && git commit -m build && git push --force git@github.com:plotly/react-pivottable.git master:gh-pages && rm -rf .git bundle.js"
   },