tslint fixes

.gitignore

@@ -5,4 +5,5 @@ dist
 docs
 tmp
 .publish
-npm-debug.log*
+npm-debug.log*
+package-lock.json

src/windowPostMessageProxy.ts

@@ -93,8 +93,8 @@ export class WindowPostMessageProxy {
   private static createRandomString(): string {
 
     	// window.msCrypto for IE
-      var cryptoObj = window.crypto || window.msCrypto;
-      var randomValueArray = new Uint32Array(1);
+      let cryptoObj = window.crypto || window.msCrypto;
+      let randomValueArray = new Uint32Array(1);
       cryptoObj.getRandomValues(randomValueArray);
 
       return randomValueArray[0].toString(36).substring(1);

tslint.json

@@ -1,9 +1,11 @@
 {
   "extends": "tslint:recommended",
   "rules": {
+    "interface-name" : false,
     "max-line-length": false,
     "member-access": false,
     "no-console": false,
+    "no-namespace": false,
     "one-line": [
       "check-whitespace",
       "check-open-brace"