fix(install): fix install method

.vim_runtime/sources_non_forked/nginx.vim/README.md

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+# nginx.vim
+
+## Description
+
+[Vim](http://www.vim.org/) plugin for [Nginx](http://www.nginx.org)
+
+
+## Features
+
+The plugin is based on the recent vim-plugin distributed with `nginx-1.12.0` and additionally features the following syntax improvements:
+
+- Highlight IPv4 and IPv6 addresses
+- Mark insecure `ssl_protocols` as errors
+- Inline template syntax highlight for **ERB** and **Jinja**
+- Inline syntax highlight for **LUA**
+- Improve integer matching
+- Syntax highlighting for `proxy_next_upstream` options
+- Syntax highlighting for `sticky` options
+- Syntax highlighting for `upstream` `server` options
+- More to come!
+
+Furthermore:
+
+- Remove annoying delimiters, resulting in strange word-boundaries
+
+*Note: Also check out [sslsecure.vim](https://github.com/chr4/sslsecure.vim): it supports highlighting insecure SSL/TLS cipher suites and protocols in all your files!*
+
+
+## Screenshots
+
+A `server` block with highlighting of insecure `ssl_protocol` options:
+![nginx server block with SSL configuration](https://chr4.org/images/nginx_ssl.png)
+
+An `upstream` block with highlighted options:
+![nginx upstream configuration](https://chr4.org/images/nginx_upstream.png)
+
+Embedded highlighting for ERB and Jinja templates:
+![Embedded highlighting for ERB and Jinja templates](https://chr4.org/images/nginx_templating.png)
+
+Embedded LUA syntax highlighting:
+![Embedded LUA syntax highlighting](https://chr4.org/images/nginx_lua.png)
+
+
+## References
+
+- Based on the original `nginx-1.12.0/contrib/vim`
+- IPv4 and IPv6 address highlighting, based on expressions found in [this forum post](http://vim.1045645.n5.nabble.com/IPv6-support-for-quot-dns-quot-zonefile-syntax-highlighting-td1197292.html)
+- [Blog post](https://chr4.org/blog/2017/04/14/better-syntax-highlighting-and-snippets-for-nginx-in-vim/) introducing this plugin including some more examples
+
+For help with secure cipher selection, visit [Mozillas SSL Configuration Generator](https://ssl-config.mozilla.org/)
+
+## Installation
+
+If your Vim is at version 8 or later, the first method below is the quickest. Otherwise, install this plugin with any Vim plugin manager ([``vim-plug``](https://github.com/junegunn/vim-plug) is recommended).
+
+### Native plugin management (Vim 8+)
+
+Clone or submodule this repo into your Vim packages location. Example:
+
+```
+mkdir -p ~/.vim/pack/plugins/start
+cd ~/.vim/pack/plugins/start
+git clone https://github.com/chr4/nginx.vim.git
+```
+
+### Plug
+```
+Plug 'chr4/nginx.vim'
+```
+
+### Dein.vim
+```
+call dein#add('chr4/nginx.vim')
+```
+
+### Vundle
+```
+Plugin 'chr4/nginx.vim'
+```
+
+### Pathogen
+```
+git clone https://github.com/chr4/nginx.vim ~/.vim/bundle/nginx.vim
+```
+
+Optionally, if you like [Jinja](http://jinja.pocoo.org/) template syntax highlighting, install `lepture/vim-jinja`, too.