fixed lsp keybindings.

They now work on more than just the first buffer you open of a given
filetype.

neovim/.config/nvim/lua/packages.lua

@@ -90,6 +90,8 @@ return require('packer').startup(function(use)
 		requires = {
 			'neovim/nvim-lspconfig',
 			'hrsh7th/cmp-nvim-lsp',
+			'saadparwaiz1/cmp_luasnip',
+			'L3MON4D3/LuaSnip'
 		}
 	}