fix version detection edge case

app.js

@@ -211,7 +211,7 @@ var firmwarewizard = function() {
 
   function findVersion(name) {
     // version with optional date in it (e.g. 0.8.0~20160502)
-    var m = /-([0-9]+.[0-9]+.[0-9]+(~[0-9]+)?)-/.exec(name);
+    var m = /-([0-9]+.[0-9]+.[0-9]+(~[0-9]+)?)[.-]/.exec(name);
     return m ? m[1] : '';
   }