chore: Add .prettierignore, apply Prettier to root

Author: eemeli

.prettierignore

@@ -0,0 +1,4 @@
+*.md
+/.*/*
+/packages/*/lib
+/packages/plurals

babel.config.js

@@ -1,4 +1,4 @@
 module.exports = {
-  presets: [["@babel/preset-env", { targets: { node: "6.5.0" } }]],
-  plugins: ["@babel/plugin-proposal-class-properties"]
-};
+  presets: [['@babel/preset-env', { targets: { node: '6.5.0' } }]],
+  plugins: ['@babel/plugin-proposal-class-properties']
+}

package.json

@@ -12,7 +12,7 @@
     "build:compiler": "babel packages/compiler/src/ -d packages/compiler/lib",
     "build": "npm run build:compiler && npm run build:cli && lerna run build",
     "clean": "git clean -fdx packages/",
-    "prettier": "prettier --write '{test,packages/*/src}/*.js'",
+    "prettier": "prettier --write .",
     "preversion": "npm run clean && npm run build && npm test",
     "test": "nyc mocha"
   },