use flyspell and set column limit to 80 for markdown

emacs

@@ -60,7 +60,9 @@
                            (flymake-php-mode)))
 (add-hook 'markdown-mode-hook (lambda()
                                 (require 'poly-markdown)
-                                (poly-markdown-mode 1)))
+                                (poly-markdown-mode 1)
+                                (flyspell-mode 1)
+                                (setq fci-rule-column 80)))
 (add-hook 'python-mode-hook (lambda()
                               (auto-complete-mode)
                               (elpy-mode)