Add flycheck hooks configuration

lisp/init-flycheck.el

 
 (require-package 'flycheck)
 
-;(add-hook 'after-init-hook #'global-flycheck-mode)
+(add-hook 'after-init-hook #'global-flycheck-mode)
+(add-hook 'c++-mode-hook (lambda () (setq flycheck-gcc-language-standard "c++11")))
 
 (provide 'init-flycheck)