Add TypeScript 3 to peerDependencies explicitly

Author: nickserv

package.json

@@ -79,7 +79,7 @@
   },
   "peerDependencies": {
     "tslint": "^4.0.0 || ^5.0.0",
-    "typescript": "^2.1.0",
+    "typescript": "^2.1.0 || ^3.0.0",
     "webpack": "^2.3.0 || ^3.0.0 || ^4.0.0"
   },
   "dependencies": {