Add parinfer layer

layers/+vim/parinfer/README.org

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+#+TITLE: parinfer layer
+
+# The maximum height of the logo should be 200 pixels.
+[[file:img/parinfer.png]]
+
+# TOC links should be GitHub style anchors.
+* Table of Contents                                        :TOC_4_gh:noexport:
+ - [[#description][Description]]
+ - [[#install][Install]]
+ - [[#key-bindings][Key bindings]]
+
+* Description
+  This layer provide parinfer, 
+  which simpler lisp editing without memorizing extra keybindings.
+
+* Install
+To use this configuration layer, add it to your =~/.spacemacs=. You will need to
+add =parinfer= to the existing =dotspacemacs-configuration-layers= list in this
+file.
+
+* Key bindings
+
+| Key Binding | Description                               |
+|-------------+-------------------------------------------|
+| ~SPC t P~   | Toggle between parinfer Indent/Paren Mode |
+

layers/+vim/parinfer/packages.el

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+;;; packages.el --- parinfer layer packages file for Spacemacs.
+;;
+;; Copyright (c) 2012-2016 Sylvain Benner & Contributors
+;;
+;; Author: DogLooksGood <DogLooksGood@rMBP>
+;; URL: https://github.com/syl20bnr/spacemacs
+;;
+;; This file is not part of GNU Emacs.
+;;
+;;; License: GPLv3
+
+(defconst parinfer-packages
+  '(parinfer))
+
+(defun parinfer/init-parinfer ()
+  (use-package parinfer
+    :defer t
+    :diminish parinfer-mode
+    :init
+    (progn
+      (add-hook 'emacs-lisp-mode-hook 'parinfer-mode)
+      (add-hook 'clojure-mode-hook 'parinfer-mode)
+      (add-hook 'common-lisp-mode-hook 'parinfer-mode)
+      (add-hook 'scheme-mode-hook 'parinfer-mode)
+      (add-hook 'lisp-mode-hook 'parinfer-mode)
+      (spacemacs|add-toggle parinfer-indent
+        :evil-leader "tP"
+        :documentation "Enable Parinfer Indent Mode."
+        :if (bound-and-true-p parinfer-mode)
+        :status (eq parinfer--mode 'indent)
+        :on (parinfer-toggle-mode)
+        :off (parinfer-toggle-mode))
+      (setq parinfer-extensions '(defaults pretty-parens evil smart-yank)))))
+
+;;; packages.el ends here