Revert "Add ruby flycheck checker locally until it is restored upstream"

This reverts commit 4c387b5e3426f5bbddbbf3054961a2b45a3a27bc.
Merge branch 'master' of https://github.com/purcell/emacs.d
Ensure TAB delegates to auto-complete in c/c++ modes (fixes #153)
Defer loading of cl-lib-highlight
Fix binding of sanityinc/eval-last-sexp-or-region
Don't details in dired by default in trunk emacs
Merge branch 'master' of github.com:JamesYuan/emacs.d
Enable guide-key
Merge branch 'master' of https://github.com/purcell/emacs.d

Conflicts:
	lisp/init-lisp.el