Added Prettier

Author: kevinastone

.prettier.yaml

@@ -0,0 +1,4 @@
+singleQuote: true
+trailingComma: all
+bracketSpacing: false
+arrowParens: avoid

package-lock.json

@@ -7,6 +7,7 @@
   "scripts": {
     "start": "ts-node app.ts start",
     "build": "tsc",
+    "format": "prettier --write '{src,test,util}/**/*.{js,jsx,ts,tsx}' '*.{js,ts}'",
     "test": "mocha --require ts-node/register --watch-extensions ts,tsx --timeout 5000 \"test/**/*.{ts,tsx}\""
   },
   "dependencies": {
@@ -56,6 +57,7 @@
     "@types/mocha": "^5.2.6",
     "@types/supertest": "^2.0.7",
     "mocha": "^5.2.0",
+    "prettier": "^2.1.1",
     "supertest": "^3.3.0",
     "ts-mocha": "^6.0.0",
     "ts-node": "^8.0.3"