Include apm version in index.json

script/dump-version-info.js

@@ -1,5 +1,6 @@
 var app = require('app');
 var fs = require('fs');
+var path = require('path');
 var request = require('request');
 
 var TARGET_URL = 'http://gh-contractor-zcbenz.s3.amazonaws.com/atom-shell/dist/index.json';
@@ -16,10 +17,16 @@ function getDate() {
   return year + '-' + month + '-' + day;
 }
 
+function getApmVersion() {
+  var package = require(path.resolve(__dirname, '..', 'package.json'));
+  return package.devDependencies['atom-package-manager'];
+}
+
 function getInfoForCurrentVersion() {
   var json = {};
   json.version = process.versions['atom-shell'];
   json.date = getDate();
+  json.apm = getApmVersion();
 
   var names = ['v8', 'uv', 'zlib', 'openssl', 'modules', 'chrome']
   for (var i in names) {