Is there a special diet for rheumatoid arthiritis to ease the pains and swelling?

Low sugar. Yep, simple answer is you need to decrease inflammatory triggers in your body. Insulin, the storage hormone of sugar and carbs (bread/pasta/grains) in excess causes inflammation. You should get your carbs from fruits and vegetables, healthy oils rich in omega 3's and lean protein sources. Skip the bread, even "good for you" whole wheat breads, which will likely trigger inflammation.