chore(package.json): update package.json

package.json

@@ -28,7 +28,7 @@
   "licenses": [
     {
       "type": "BSD",
-      "url": "https://github.com/coreyti/showdown/raw/master/license.txt"
+      "url": "https://github.com/showdownjs/showdown/blob/master/license.txt"
     }
   ],
   "main": "./dist/showdown.js",
@@ -36,7 +36,6 @@
     "test": "mocha ./test/**/*.js"
   },
   "devDependencies": {
-    "angular": "^1.3.2",
     "chai": "^1.10.0",
     "grunt": "^0.4.5",
     "grunt-contrib-concat": "^0.5.0",