Update projects to latest typescript and friends

Author: Mpdreamz

.gitignore

@@ -3,6 +3,7 @@ logs
 *.log
 npm-debug.log*
 .idea
+.vscode
 
 # Runtime data
 pids

barebones-example/index.js

@@ -1,6 +1,6 @@
-var spec = require("elasticsearch-client-specification");
+const spec = require("elasticsearch-client-specification");
 
-var specification = new spec.Specification();
+let specification = new spec.Specification();
 console.log("The specification contains " + specification.endpoints.length + " endpoints yielding " + specification.types.length + " types");
 
 specification = spec.Specification.load();