```ruby
 2.0.0p353 :003 > URI.join("http://wp.pl/api", "lol")
 => #<URI::HTTP:0x00000101865f68 URL:http://wp.pl/lol>
2.0.0p353 :004 > URI("http://wp.pl/api").merge("lol")
```
 => #<URI::HTTP:0x00000101846820 URL:http://wp.pl/lol>