finish puppet-lint json output parsing functionality

Author: mschuchard

lib/main.js

@@ -80,14 +80,14 @@ export default {
             }
             const toReturn = [];
 
-            // Parse JSON output
-            const info = JSON.parse(output);
+            // Parse JSON output and immediately access zeroth element of redundant outer array
+            const info = JSON.parse(output)[0];
 
             // Check for proper warnings and errors from stdout
             if (info.length > 0) {
-              info[0][0].forEach(function (issue) {
+              info.forEach(function (issue) {
                 toReturn.push({
-                  severity: issue.KIND,
+                  severity: issue.kind,
                   excerpt: issue.message,
                   location: {
                     file: issue.path,