move polyfill dist to babel-polyfill package

packages/babel-polyfill/scripts/build-dist.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+set -e
+
+BROWSERIFY_CMD="../../node_modules/browserify/bin/cmd.js"
+UGLIFY_CMD="../../node_modules/uglify-js/bin/uglifyjs"
+
+mkdir -p dist
+
+node $BROWSERIFY_CMD -e lib/index.js >dist/polyfill.js
+node $UGLIFY_CMD dist/index.js >dist/polyfill.min.js

packages/babel-polyfill/scripts/postpublish.js

@@ -0,0 +1 @@
+rm(__dirname + "/../browser.js");

packages/babel-polyfill/scripts/prepublish.js

@@ -0,0 +1,5 @@
+function relative(loc) {
+  return __dirname + "/../" + loc;
+}
+
+cp(relative("dist/polyfill.min.js"), relative("browser.js"));