Remove babel from deps before publish

@adamdicarlo had a fantastic idea to move the babel dependencies to
devDependencies before publishing. That way, they are still there for
git installs, but npm installs, which are the fast majority, are much
faster.

I tested this by publishing `0.16.3` with the tag `test`, you can test
using `npm install radium@test`. In retrospect the version should have
had `-test` after it too.

Fixes FormidableLabs#530

npm-scripts/move-babel-to-dependencies.js

@@ -0,0 +1,19 @@
+const fs = require('fs');
+
+const packageJSON = JSON.parse(fs.readFileSync('package.json', 'utf8'));
+
+const dependencyKeys = Object.keys(packageJSON.dependencies);
+dependencyKeys.filter(key => key.startsWith('babel')).forEach(key => {
+  packageJSON.devDependencies[key] = packageJSON.dependencies[key];
+});
+packageJSON.dependencies = dependencyKeys
+  .filter(key => !key.startsWith('babel'))
+  .reduce(
+    (result, key) => {
+      result[key] = packageJSON.dependencies[key];
+      return result;
+    },
+    {}
+  );
+
+fs.writeFileSync('package.json', JSON.stringify(packageJSON, null, '  ') + '\n', 'utf8');

package.json

@@ -20,11 +20,14 @@
     "babel": "rimraf lib && babel src/ -d lib/",
     "dist": "webpack && webpack --config=webpack.config.minified.js",
     "examples": "webpack-dev-server --config examples/webpack.config.js --no-info --content-base examples/",
+    "deps-fix": "babel-node ./npm-scripts/move-babel-to-dependencies.js",
+    "deps-restore": "git checkout package.json",
     "flow": "node -e \"process.exit(process.platform === 'win32' ? 0 : 1)\" || flow check",
     "lib": "npm run babel && rimraf lib/__tests__ lib/__mocks__",
     "lint": "eslint src && npm run flow",
     "postinstall": "cd lib || npm run lib",
-    "prepublish": "npm test && npm run lint && npm run lib && npm run dist",
+    "prepublish": "npm test && npm run lint && npm run lib && npm run dist && npm run deps-fix",
+    "postpublish": "npm run deps-restore",
     "start": "./node_modules/.bin/babel-node examples/server.js",
     "test": "karma start",
     "test-coverage": "karma start karma.conf.coverage.js",