New Meat textures

added items folder with Cooked and raw beef and chicken

http://www.mcmiddleearth.com/threads/meat-textures.402/ for textures and discussion 
![chicken_raw](https://cloud.githubusercontent.com/assets/7194326/2910988/999eac4a-d651-11e3-970a-1ce3baabb1ea.png)
![chicken_cooked](https://cloud.githubusercontent.com/assets/7194326/2910989/9ef3199c-d651-11e3-8a5f-24f4e6bc6380.png)
![beef_cooked](https://cloud.githubusercontent.com/assets/7194326/2910993/b9764334-d651-11e3-9acc-1545c4436f30.png)
![beef_raw](https://cloud.githubusercontent.com/assets/7194326/2910994/b986b156-d651-11e3-8eaa-9c74d04dcd54.png)