add methods: getting page numbers or conditions

README.md

@@ -74,6 +74,19 @@ User.page(7)
 
 Note: pagination starts at page 1, not at page 0 (page(0) will return the same results as page(1)).
 
+You can get page numbers or page conditions by using below methods.
+```ruby
+User.count                     #=> 1000
+User.page(1).limit_value       #=> 20
+User.page(1).total_pages       #=> 50
+User.page(1).current_page      #=> 1
+User.page(1).next_page         #=> 2
+User.page(2).prev_page         #=> 1
+User.page(1).first_page?       #=> true
+User.page(50).last_page?       #=> true
+User.page(100).out_of_range?   #=> true
+```
+
 ### The `per` Scope
 
 To show a lot more users per each page (change the `per_page` value)