Add prettier to make sure things stay nice and clean

.prettierignore

@@ -0,0 +1,3 @@
+package.json
+package-lock.json
+

package-lock.json

@@ -2883,6 +2883,12 @@
       "dev": true,
       "optional": true
     },
+    "prettier": {
+      "version": "1.14.3",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-1.14.3.tgz",
+      "integrity": "sha512-qZDVnCrnpsRJJq5nSsiHCE3BYMED2OtsI+cmzIzF1QIfqm5ALf8tEJcO27zV1gKNKRPdhjO0dNWnrzssDQ1tFg==",
+      "dev": true
+    },
     "private": {
       "version": "0.1.8",
       "resolved": "https://registry.npmjs.org/private/-/private-0.1.8.tgz",

package.json

@@ -7,7 +7,8 @@
     "src"
   ],
   "scripts": {
-    "test": "jasmine"
+    "test": "jasmine",
+    "format_code": "nodejs node_modules/prettier/bin-prettier.js --config ./prettier.config.js --write \"{.,{packages,bin}/**/!(dist)}/*.{js,json,md}\""
   },
   "keywords": [
     "reactive"
@@ -16,6 +17,7 @@
   "license": "Apache-2.0",
   "devDependencies": {
     "jasmine": "^3.2.0",
-    "jasmine-es6": "^0.4.3"
+    "jasmine-es6": "^0.4.3",
+    "prettier": "^1.14.3"
   }
 }

prettier.config.js

@@ -0,0 +1,12 @@
+module.exports = {
+	printWidth: 100,
+	tabWidth: 1,
+	useTabs: true,
+	singleQuote: true,
+	trailingComma: 'none',
+	bracketSpacing: true,
+	semi: true,
+	requirePragma: false,
+	proseWrap: 'always',
+	arrowParens: 'avoid'
+};