Added a testing suite (#8)

Tests now look for any *.spec.ts files.
Added a sample spec to image-diff.

Author: navx2810

.gitignore

@@ -6,5 +6,8 @@ js/**/*
 # Temporary files generated by code
 temp/**/*
 
+# Yarn Logs
+yarn-error.log
+
 # Git conventions
 !.gitkeep

package.json

@@ -4,7 +4,8 @@
   "main": "index.js",
   "license": "MIT",
   "scripts": {
-    "dev": "nodemon ./js/index.js"
+    "dev": "nodemon ./js/index.js",
+    "test": "mocha \"./{,!(node_modules)/**/}*.spec.ts\" --require ts-node/register -O spec"
   },
   "dependencies": {
     "express": "^4.16.2",
@@ -13,9 +14,14 @@
     "puppeteer": "^0.12.0"
   },
   "devDependencies": {
+    "@types/chai": "^4.0.4",
     "@types/express": "^4.0.38",
+    "@types/mocha": "^2.2.43",
     "@types/node": "^8.0.47",
-    "typescript": "^2.5.3",
-    "nodemon": "^1.12.1"
+    "chai": "^4.1.2",
+    "mocha": "^4.0.1",
+    "nodemon": "^1.12.1",
+    "ts-node": "^3.3.0",
+    "typescript": "^2.5.3"
   }
 }

routes/image-diff/index.spec.ts

@@ -0,0 +1,7 @@
+import { assert } from "chai"
+
+describe("Image Diff", () => {
+    it("should work just fine", () => {
+        assert.isTrue(true)
+    })
+})