Run testling on less browsers

package.json

@@ -43,14 +43,15 @@
   "testling": {
     "files": "tests/**/*.js",
     "browsers": [
-      "ie/7..latest",
-      "chrome/22..latest",
-      "firefox/16..latest",
-      "safari/6..latest",
-      "opera/11.0..latest",
-      "iphone/6..latest",
-      "ipad/6..latest",
-      "android-browser/latest"
+      "ie/8..latest",
+      "firefox/4.0", "firefox/latest", "firefox/nightly",
+      "chrome/10", "chrome/latest", "chrome/canary",
+      "opera/12..latest",
+      "opera/next",
+      "safari/5.1..latest",
+      "ipad/6.0..latest",
+      "iphone/6.0..latest",
+      "android-browser/4.2..latest"
     ]
   }
 }