added setup script

setup-neovim.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env sh
+
+printf "Continue copying files and removing current for Neovim (y/n)? "
+read -r choice
+case "$choice" in 
+    y|Y )
+        echo "removing current neovim config..."
+        rm -rfv ~/.config/nvim/*
+        echo "copying files..."
+        cp -rv * ~/.config/nvim/
+    ;;
+    n|N )
+        echo "aborting..."
+        exit 0
+    ;;
+    * )
+        echo "invalid"
+        exit 1
+    ;;
+esac