Add all and all-warn configs (#23)

Author: fregante

README.md

@@ -40,10 +40,33 @@ module.exports = {
 
 ### ./.eslintrc
 
+#### Use all rules as errors
+
+```json
+{
+  "plugins": ["local-rules"],
+  "extends": [
+    "plugin:local-rules/all"
+  ]
+}
+```
+
+#### Use all rules as warnings
+
 ```json
 {
-  "plugins": ["eslint-plugin-local-rules"],
+  "plugins": ["local-rules"],
+  "extends": [
+    "plugin:local-rules/all-warn"
+  ]
+}
+```
 
+#### Customize each rule independently
+
+```json
+{
+  "plugins": ["local-rules"],
   "rules": {
     "local-rules/disallow-identifiers": "error"
   }

index.js

@@ -26,6 +26,18 @@ if (!rules) {
   );
 }
 
+var getConfig = (type) => ({
+    rules: Object.fromEntries(
+      Object
+        .keys(rules)
+        .map((rule) => [`local-rules/${rule}`, type])
+    );
+});
+
 module.exports = {
+  configs: {
+    all: getConfig('error'),
+    'all-warn': getConfig('warn'),
+  },
   rules: rules,
 };