Correct how to find latest release version.

package.json

@@ -28,6 +28,7 @@
     "js-base64": "^2.1.9",
     "nightwatch": "^0.9.3",
     "semistandard": "^7.0.0",
+    "semver": "^5.3.0",
     "solc": "https://github.com/ethereum/solc-js",
     "tape": "^4.5.1",
     "web3": "^0.16.0",

src/app.js

 /* global alert, confirm, prompt, Option, Worker, soljsonSources */
 
 var $ = require('jquery');
+var semver = require('semver');
 
 var utils = require('./app/utils');
 var QueryParams = require('./app/query-params');
@@ -498,12 +499,17 @@ var run = function () {
   };
 
   if (window.soljsonSources !== undefined) {
-    var latestRelease = 'soljson-latest.js';
+    var latestRelease = null;
     if (window.soljsonReleases !== undefined) {
       for (var release in window.soljsonReleases) {
+        if (latestRelease === null || semver.gt(release, latestRelease)) {
           latestRelease = release;
         }
       }
+      if (latestRelease === null) {
+        latestRelease = 'soljson-latest.js';
+      }
+    }
     loadVersion(queryParams.get().version || latestRelease);
   } else {
     loadVersion('soljson.js');