Adds liniting into the workflow (#3082)

* initial linting of src

* fix indent to 2 spaces

* Removes unnecessary rules

* ignore spec folder for now

* Spec linting

* Fix spec indent

* nits

* nits

* no no-empty rule

src/Adapters/Cache/InMemoryCacheAdapter.js

@@ -7,7 +7,7 @@ export class InMemoryCacheAdapter {
   }
 
   get(key) {
-    return new Promise((resolve, reject) => {
+    return new Promise((resolve) => {
       let record = this.cache.get(key);
       if (record == null) {
         return resolve(null);