Replace nerdrtree with neotree

plug.vim

@@ -1,11 +1,14 @@
 " Specify a directory for plugins
 call plug#begin(stdpath('data') . '/plugged')
 " Colourthemes
-Plug 'balanceiskey/gloom-vim'
+Plug 'Rigellute/shades-of-purple.vim'
 
 " Editor extensions
 Plug 'neomake/neomake'
-Plug 'preservim/nerdtree'
+Plug 'nvim-lua/plenary.nvim'
+Plug 'nvim-tree/nvim-web-devicons'
+Plug 'MunifTanjim/nui.nvim'
+Plug 'nvim-neo-tree/neo-tree.nvim'
 Plug 'zhaocai/timestamp.vim' 
 Plug 'vim-airline/vim-airline'
 Plug 'bling/vim-bufferline'