Update README.md

Author: dsame

README.md

@@ -2,3 +2,44 @@ mongoose-localize
 =================
 
 A nodejs module to convert mongoose model property to set of localized properties.
+
+As soon as mongoose_localize has been required...
+
+```javascript
+import mongoose_localize from 'mongoose-localize';
+mongoose_localize.setLocales(['locale1','locale2',...,'localeN']);
+```
+
+...every attribute of mongoose Scheme containing  "localize" attribute set to true...
+
+```javascript
+approverSchema = new mongoose.Schema({
+	name: {
+		type:String,
+		localize: true
+	}
+});
+```
+
+...will be treated as if it would be 
+```javascript
+approverSchema = new mongoose.Schema({
+	name: {
+		locale1: {type:String},
+		locale2: {type:String},
+    ...
+    localeN: {type:String},
+	}
+});
+approverSchema.virtual('localized.name').get(function () {
+// return name in the current locale
+  ...
+});
+```
+The "localize" attribute will be removed from source Scheme. It's nor a bug neither a feature, it is "by design".  
+
+While the module must be required and setLocales must be called before the first Schema added the current locale may be set and changed in any moment. 
+
+```javascript
+mongoose_localize.setLocale('locale2');
+```