use nvim as man reader

dot_config/zsh/include/functions.zsh

@@ -25,3 +25,14 @@ pocompile() {
 
     msgfmt -o "${app_po%po}mo" "$app_po"
 }
+
+man() {
+    if [[ "$1" = -k ]]; then
+        command man "$@"        
+    elif [[ -n "$1" ]]; then
+        vim man://$1
+    else
+        echo 'What manual page do you want?'
+        return 1
+    fi
+}