fix(node): Split Node rules out from base config

We don't want to include Node-specific rules for the base configuration. This allows projects to

lint Node files separately from browser files.

index.js

@@ -113,18 +113,10 @@ module.exports = {
         }],
         'require-jsdoc': [1],
         'semi': [2, 'always'],
-        'space-before-function-paren': [2, 'always'],
-
-        // Node/CommonJS
-        'global-require': [2],
-        'handle-callback-err': [1],
-        'no-mixed-requires': [2],
-        'no-new-require': [2],
-        'no-path-concat': [2],
+        'space-before-function-paren': [2, 'always']
     },
     env: {
-        browser: true,
-        node: true
+        commonjs: true
     },
     extends: ['eslint:recommended']
 };

node.js

@@ -0,0 +1,10 @@
+module.exports = {
+    rules: {
+        // Node/CommonJS
+        'global-require': [2],
+        'handle-callback-err': [1],
+        'no-mixed-requires': [2],
+        'no-new-require': [2],
+        'no-path-concat': [2]
+    }
+};