Adding edit-server layer.

contrib/tools/edit-server/README.md

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+# edit-server contribution layer for Spacemacs
+
+![logo](img/chrome.png)
+
+<!-- markdown-toc start - Don't edit this section. Run M-x markdown-toc/generate-toc again -->
+**Table of Contents**
+
+- [edit-server contribution layer for Spacemacs](#edit-server-contribution-layer-for-spacemacs)
+    - [Description](#description)
+    - [Install](#install)
+    - [Configuration](#configuration)
+
+<!-- markdown-toc end -->
+
+## Description
+
+This layer provides [edit-server](http://melpa.org/#/edit-server) - a server that responds to edit requests from Chrome. The package is required by the [Edit with Emacs](https://chrome.google.com/webstore/detail/edit-with-emacs/ljobjlafonikaiipfkggjbhkghgicgoh) Google Chrome extension.
+
+More information can be found on [Emacs Wiki](http://www.emacswiki.org/emacs/Edit_with_Emacs).
+
+## Install
+
+To use this contribution add it to your `~/.spacemacs`
+
+```elisp
+(setq-default dotspacemacs-configuration-layers '(edit-server))
+```
+
+The server is configured to start when the editor is opened.
+
+## Configuration
+
+You can hook into `edit-server`'s provided hooks in `dotspacemacs/config` in your `.spacemacs` file.
+
+```elisp
+(defun dotspacemacs/config ()
+  ;; Open github text areas as markdown
+  (add-hook 'edit-server-start-hook
+            (lambda ()
+              (when (string-match "github.com" (buffer-name))
+                (markdown-mode))))
+)
+```

contrib/tools/edit-server/packages.el

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+;;; packages.el --- edit-server Layer packages File for Spacemacs
+;;
+;; Copyright (c) 2012-2014 Sylvain Benner
+;; Copyright (c) 2014-2015 Sylvain Benner & Contributors
+;;
+;; Author: Ben Hayden <hayden767@gmail.com>
+;; URL: https://github.com/syl20bnr/spacemacs
+;;
+;; This file is not part of GNU Emacs.
+;;
+;;; License: GPLv3
+
+(setq edit-server-packages '(edit-server))
+
+(defun edit-server/init-edit-server ()
+  (use-package edit-server
+    :init (eval-after-load 'edit-server
+            '(edit-server-start))))