Add github-clone to github layer

- allows cloning and forking from within emacs

layers/+source-control/github/README.org

@@ -10,6 +10,7 @@
  - [[Key Bindings][Key Bindings]]
    - [[magit-gh-pulls][magit-gh-pulls]]
    - [[gist.el][gist.el]]
+   - [[Clone repositories][Clone repositories]]
    - [[Browse files][Browse files]]
 
 * Description
@@ -21,6 +22,7 @@ This layers adds support for [[http://github.com][Github]].
 - [[https://github.com/defunkt/gist.el][gist.el]]: full-featured mode to browse and post Github gists.
 - [[https://github.com/osener/github-browse-file][github-browse-file]] and [[https://github.com/sshaw/git-link][git-link]]: quickly browse github URL in your
   browser.
+- [[https://github.com/dgtized/github-clone.el][Github clone]] allows for easy cloning and forking of repositories.
 
 * Install
 
@@ -80,6 +82,12 @@ In the gist list buffer:
 | ~V~         | =visual-line state=          |
 | ~y~         | print URL and copy it        |
 
+** Clone repositories
+
+| Key Binding | Description                          |
+|-------------+--------------------------------------|
+| ~SPC g c~   | clone and optionally fork repository |
+
 ** Browse files
 
 | Key Binding | Description                                                        |

layers/+source-control/github/packages.el

@@ -15,6 +15,7 @@
         gist
         git-link
         github-browse-file
+        github-clone
         ;; not up to date
         ;; helm-gist
         magit-gh-pulls
@@ -62,6 +63,13 @@
     (evil-leader/set-key
       "gfb" 'github-browse-file)))
 
+(defun github/init-github-clone ()
+  (use-package github-clone
+    :defer t
+    :init
+    (evil-leader/set-key
+      "gc" 'github-clone)))
+
 (defun github/init-git-link ()
   (use-package git-link
     :defer t