Add FakeR javadoc (to describe its purpose)

BlinkMoto/src/android/java/com/phonegap/plugins/blinkid/FakeR.java

@@ -4,12 +4,8 @@
 import android.content.Context;
 
 /**
- * R replacement for PhoneGap Build.
- * <p>
- * ([^.\w])R\.(\w+)\.(\w+)
- * $1fakeR("$2", "$3")
- *
- * @author Maciej Nux Jaros
+ * Replacement for android resources <b>R</b> in PhoneGap plugins.<br/>
+ * Used for resources added with a plugin. Since the application has its own <b>R</b> the plugin must fetch its resources through the activity's context.
  */
 public class FakeR {
     private Context context;
@@ -55,4 +51,4 @@ public int getId(String key) {
     public String getString(String key) {
         return context.getResources().getString(getIdFrom("string", key));
     }
-}
+}