Move the whole autoprefixer config to configBridge.json.

Reduces duplication.

Gruntfile.js

@@ -193,10 +193,7 @@ module.exports = function (grunt) {
           sourcesContent: true
         },
         processors: [
-          require('autoprefixer')({
-            browsers: configBridge.config.autoprefixerBrowsers,
-            cascade: false
-          })
+          require('autoprefixer')(configBridge.config.autoprefixer)
         ]
       },
       core: {

docs/assets/js/src/customizer.js

@@ -245,7 +245,7 @@ window.onload = function () { // wait for load in a dumb way because B-0
     var bsLessSource    = preamble + generateLESS('bootstrap.less', lessFileIncludes, vars)
     var themeLessSource = preamble + generateLESS('theme.less',     lessFileIncludes, vars)
 
-    var prefixer = autoprefixer({ browsers: __configBridge.autoprefixerBrowsers })
+    var prefixer = autoprefixer(__configBridge.autoprefixer)
 
     $.when(
       compileLESS(bsLessSource, 'bootstrap', result),

grunt/configBridge.json

@@ -23,16 +23,19 @@
     ]
   },
   "config": {
-    "autoprefixerBrowsers": [
-      "Android 2.3",
-      "Android >= 4",
-      "Chrome >= 20",
-      "Firefox >= 24",
-      "Explorer >= 8",
-      "iOS >= 6",
-      "Opera >= 12",
-      "Safari >= 6"
-    ],
+    "autoprefixer": {
+      "browsers": [
+        "Android 2.3",
+        "Android >= 4",
+        "Chrome >= 20",
+        "Firefox >= 24",
+        "Explorer >= 8",
+        "iOS >= 6",
+        "Opera >= 12",
+        "Safari >= 6"
+      ],
+      "cascade": false
+    },
     "jqueryCheck": [
       "if (typeof jQuery === 'undefined') {",
       "  throw new Error('Bootstrap\\'s JavaScript requires jQuery')",