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-The NERDTree
-=============
-
-Introduction
-------------
-
-The NERDTree is a file system explorer for the Vim editor. Using this plugin,
-users can visually browse complex directory hierarchies, quickly open files for
-reading or editing, and perform basic file system operations.
-
-This plugin can also be extended with custom mappings using a special API. The
-details of this API and of other NERDTree features are described in the
-included documentation.
-
-![NERDTree Screenshot](https://github.com/scrooloose/nerdtree/raw/master/screenshot.png)
-
-Installation
-------------
-
-#### [pathogen.vim](https://github.com/tpope/vim-pathogen)
-
-    git clone https://github.com/scrooloose/nerdtree.git ~/.vim/bundle/nerdtree
-
-Then reload Vim, run `:helptags ~/.vim/bundle/nerdtree/doc/` or `:Helptags`, and check out `:help NERDTree.txt`.
-
-
-#### [apt-vim](https://github.com/egalpin/apt-vim)
-
-    apt-vim install -y https://github.com/scrooloose/nerdtree.git
-
-F.A.Q.
-------
-
-> Is there any support for `git` flags?
-
-Yes, install [nerdtree-git-plugin](https://github.com/Xuyuanp/nerdtree-git-plugin).
-
----
-
-> Can I have the nerdtree on every tab automatically?
-
-Nope. If this is something you want then chances are you aren't using tabs and
-buffers as they were intended to be used. Read this
-http://stackoverflow.com/questions/102384/using-vims-tabs-like-buffers
-
-If you are interested in this behaviour then consider [vim-nerdtree-tabs](https://github.com/jistr/vim-nerdtree-tabs)
-
----
-> How can I open a NERDTree automatically when vim starts up?
-
-Stick this in your vimrc: `autocmd vimenter * NERDTree`
-
----
-> How can I open a NERDTree automatically when vim starts up if no files were specified?
-
-Stick this in your vimrc:
-
-    autocmd StdinReadPre * let s:std_in=1
-    autocmd VimEnter * if argc() == 0 && !exists("s:std_in") | NERDTree | endif
-
-Note: Now start vim with plain `vim`, not `vim .`
-
----
-> How can I open NERDTree automatically when vim starts up on opening a directory?
-
-    autocmd StdinReadPre * let s:std_in=1
-    autocmd VimEnter * if argc() == 1 && isdirectory(argv()[0]) && !exists("s:std_in") | exe 'NERDTree' argv()[0] | wincmd p | ene | endif
-
-This window is tab-specific, meaning it's used by all windows in the tab. This trick also prevents NERDTree from hiding when first selecting a file.
-
----
-> How can I map a specific key or shortcut to open NERDTree?
-
-Stick this in your vimrc to open NERDTree with `Ctrl+n` (you can set whatever key you want):
-
-    map <C-n> :NERDTreeToggle<CR>
-
----
-> How can I close vim if the only window left open is a NERDTree?
-
-Stick this in your vimrc:
-
-    autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif
-
----
-> Can I have different highlighting for different file extensions?
-
-See here: https://github.com/scrooloose/nerdtree/issues/433#issuecomment-92590696
-
----
-> How can I change default arrows?
-
-Use these variables in your vimrc. Note that below are default arrow symbols
-
-    let g:NERDTreeDirArrowExpandable = '▸'
-    let g:NERDTreeDirArrowCollapsible = '▾'