Add individual tools/jsonlint.js to lint package.json files

package.json

@@ -36,6 +36,7 @@
     "jasmine": "^2.8.0",
     "jscs": "^3.0.7",
     "jslint": "^0.11.0",
+    "jsonlint": "^1.6.2",
     "rewire": "^2.5.2",
     "vows-si": "^0.7.1"
   },

tools/jsonlint.js

@@ -0,0 +1,36 @@
+#!/usr/bin/env node
+
+var fs = require('fs');
+var glob = require('glob');
+var async = require('async');
+var colors = require('colors');
+var jsonlint = require("jsonlint");
+var errorCount = 0;
+
+var jsonfiles = glob.sync("ajax/libs/*/package.json");
+
+console.log("Found " + jsonfiles.length + " json file(s)");
+
+async.map(jsonfiles, function lintjson(item, cb) {
+  fs.readFile(item, 'utf8', (err, data) => {
+    if (err) throw err;
+    try {
+      jsonlint.parse(data);
+    } catch(e) {
+      errorCount++;
+      console.log("\n" + item.yellow + " parsing failed:\n".red);
+      console.log(e.toString().magenta);
+    }
+    cb();
+  });
+}, function (err, results) {
+  if (err) {
+    console.dir(err);
+  }
+  if (errorCount > 0) {
+    console.log("\nYou can validate json here: https://jsonlint.com/ once you revised the file(s) with formatting problem.\n".cyan);
+  } else if (jsonfiles > 0) {
+    console.log("\nAll json parsed without problem!\n".green);
+  }
+});
+