doc: remove warning and features to be add

README.org

@@ -2,8 +2,6 @@
 
 /Scratch buffers one command away/
 
-:warning: /Still Instable, existing Api might change/
-
 [[https://travis-ci.org/AdrieanKhisbe/omni-scratch.el][file:https://travis-ci.org/AdrieanKhisbe/omni-scratch.el.svg]]
 [[https://coveralls.io/r/AdrieanKhisbe/omni-scratch.el][file:https://coveralls.io/repos/AdrieanKhisbe/omni-scratch.el/badge.svg]]
 [[http://melpa.org/#/omni-scratch][file:http://melpa.org/packages/omni-scratch-badge.svg]]
@@ -14,7 +12,6 @@
 * Description
 
 The goal of this basic mode is to easily create scratch buffer to edit in the curreny major mode you are using.
-Some features like custom scratch buffer with specific minor-modes, copy on quit, etc, will be added over time.
 
 * Usage