My init.el file.

init.el

; search path
(let ((default-directory "~/.emacs.d/"))
  (normal-top-level-add-subdirs-to-load-path))

; MELPA
(require 'package)
(add-to-list 'package-archives
  '("melpa" . "http://melpa.milkbox.net/packages/") t)

; save desktop
(desktop-save-mode 1)

; indentation
(setq-default indent-tabs-mode nil)
(setq ruby-deep-indent-paren nil)

; line numbers
; (require 'nlinum)
(global-linum-mode 1)

; auto-complete
(require 'auto-complete-config)
(ac-config-default)
(setq ac-delay 0.7)

; css-mode
(setq-default css-indent-offset 2)

; sass-mode
(autoload 'scss-mode "scss-mode")
(add-to-list 'auto-mode-alist '("\\.scss\\'" . css-mode))
(setq scss-compile-at-save nil)

; web-mode
(add-to-list 'load-path "~/.emacs.d/")
(require 'web-mode)
(add-to-list 'auto-mode-alist '("\\.phtml\\'" . web-mode))
(add-to-list 'auto-mode-alist '("\\.tpl\\.php\\'" . web-mode))
(add-to-list 'auto-mode-alist '("\\.jsp\\'" . web-mode))
(add-to-list 'auto-mode-alist '("\\.as[cp]x\\'" . web-mode))
(add-to-list 'auto-mode-alist '("\\.erb\\'" . web-mode))
(add-to-list 'auto-mode-alist '("\\.mustache\\'" . web-mode))
(add-to-list 'auto-mode-alist '("\\.djhtml\\'" . web-mode))

(setq web-mode-markup-indent-offset 2)

;;; yasnippet and web-mode are incompatible
(add-hook 'web-mode-hook (lambda()
                           (setq yas-dont-activate t)))

(add-to-list 'auto-mode-alist '("\\.mahtml\\'" . web-mode))
(setq web-mode-engines-alist
      '(("erb"    . "\\.mahtml\\'")))

; use ruby-mode for DSLs
(setq auto-mode-alist (cons '("\\.rabl$" . ruby-mode) auto-mode-alist))
(setq auto-mode-alist (cons '("\\Gemfile$" . ruby-mode) auto-mode-alist))
(setq auto-mode-alist (cons '("\\Gemfile.lock$" . ruby-mode) auto-mode-alist))


; auto-indent
(electric-indent-mode 1)

(dolist (command '(yank yank-pop))
   (eval `(defadvice ,command (after indent-region activate)
            (and (not current-prefix-arg)
                 (member major-mode '(emacs-lisp-mode lisp-mode
                                      clojure-mode    scheme-mode
                                      haskell-mode    ruby-mode
                                      rspec-mode      python-mode
                                      c-mode          c++-mode
                                      objc-mode       latex-mode
                                      plain-tex-mode))
                 (let ((mark-even-if-inactive transient-mark-mode))
                   (indent-region (region-beginning) (region-end) nil))))))

(defadvice kill-line (before check-position activate)
  (if (member major-mode
              '(emacs-lisp-mode scheme-mode lisp-mode
                                c-mode c++-mode objc-mode
                                latex-mode plain-tex-mode))
      (if (and (eolp) (not (bolp)))
          (progn (forward-char 1)
                 (just-one-space 0)
                 (backward-char 1)))))

; speedbar

;(speedbar t)

;(require 'speedbar)
;  (defconst my-speedbar-buffer-name "SPEEDBAR")
;  ; (defconst my-speedbar-buffer-name " SPEEDBAR") ; try this if you get "Wrong type argument: stringp, nil"
;  (defun my-speedbar-no-separate-frame ()
;    (interactive)
;    (when (not (buffer-live-p speedbar-buffer))
;      (setq speedbar-buffer (get-buffer-create my-speedbar-buffer-name)
;            speedbar-frame (selected-frame)
;            dframe-attached-frame (selected-frame)
;            speedbar-select-frame-method 'attached
;            speedbar-verbosity-level 0
;            speedbar-last-selected-file nil)
;      (set-buffer speedbar-buffer)
;      (speedbar-mode)
;      (speedbar-reconfigure-keymaps)
;      (speedbar-update-contents)
;      (speedbar-set-timer 1)
;      (make-local-hook 'kill-buffer-hook)
;      (add-hook 'kill-buffer-hook
;                (lambda () (when (eq (current-buffer) speedbar-buffer)
;                             (setq speedbar-frame nil
;                                   dframe-attached-frame nil
;                                   speedbar-buffer nil)
;                             (speedbar-set-timer nil)))))
;    (set-window-buffer (selected-window) 
;                       (get-buffer my-speedbar-buffer-name)))