Add: zeal layer (#2469)

autoload/SpaceVim/layers/tools/zeal.vim

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+"=============================================================================
+" zeal.vim --- tools#zeal layer file for SpaceVim
+" Copyright (c) 2018 Shidong Wang & Contributors
+" Author: Chen Lijun < chenlijun1999 at gmail.com >
+" URL: https://spacevim.org
+" License: GPLv3
+"=============================================================================
+
+""
+" @section tools#zeal, layer-tools-zeal
+" @parentsection layers
+" This layer provides Zeal integration for SpaceVim
+function! SpaceVim#layers#tools#zeal#plugins() abort
+  return [
+        \ ['KabbAmine/zeavim.vim', {
+        \ 'on_map': { 'nv': ['<Plug>Zeavim', '<Plug>ZVVisSelection', '<Plug>ZVKeyDocset'] }
+        \ }],
+        \ ]
+endfunction
+
+function! SpaceVim#layers#tools#zeal#config() abort
+  " Disable default mapping
+  let g:zv_disable_mapping = 1
+
+  let g:_spacevim_mappings_space.D = { 'name' : '+Zeal' }
+  call SpaceVim#mapping#space#def('nmap', ['D', 'd'],
+        \ '<Plug>Zeavim', 'search word under cursor', 0)
+  call SpaceVim#mapping#space#def('vmap', ['D', 'D'],
+        \ '<Plug>ZVVisSelection', 'search selected text', 0)
+  call SpaceVim#mapping#space#def('nmap', ['D', 's'],
+        \ '<Plug>ZVKeyDocset', 'specify docset and query', 0)
+endfunction

docs/layers/tools/zeal.md

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+---
+title: "SpaceVim zeal layer"
+description: "This layer provides Zeal integration for SpaceVim"
+---
+
+# [SpaceVim Layers:](https://spacevim.org/layers) tools#zeal
+
+<!-- vim-markdown-toc GFM -->
+
+- [Description](#description)
+- [Layer Installation](#layer-installation)
+- [Key bindings](#key-bindings)
+
+<!-- vim-markdown-toc -->
+
+## Description
+
+This layer provides Zeal integration for SpaceVim.
+
+## Layer Installation
+
+To use this configuration layer, add it to your `~/.SpaceVim.d/init.toml`.
+
+
+```toml
+[[layers]]
+  name = "tools#zeal"
+```
+
+## Key bindings
+
+| Key Binding | Description                                          |
+| ----------- | ---------------------------------------------------- |
+| `SPC D d`   | search word under cursor                             |
+| `SPC D D`   | search selected text                                 |
+| `SPC D s`   | select docset (TIP: use tab completion) and search   |