The getting started with ensime post!

plugins.sbt

// Add this file to ~/.sbt/plugins/plugins.sbt.
//
// Once this is ready, make sure you have sbt 0.12 ("brew install sbt" should do it),
// then try running
//
// sbt "ensime generate"
//
// in bijection's root directory. ("git clone git@github.com:twitter/bijection.git")

resolvers += "Scala-Tools Maven2 Snapshots Repository" at "http://scala-tools.org/repo-snapshots"

addSbtPlugin("org.ensime" % "ensime-sbt-cmd" % "0.1.1")

scala.el

;; Make sure your package archives contain "melpa"

(setq package-archives
          '(("gnu"         . "http://elpa.gnu.org/packages/")
            ("original"    . "http://tromey.com/elpa/")
            ("org"         . "http://orgmode.org/elpa/")
            ("marmalade"   . "http://marmalade-repo.org/packages/")
            ("elpa"        . "http://tromey.com/elpa/")
            ("melpa"       . "http://melpa.milkbox.net/packages/")))

;; M-x package-list-packages
;; install scala-mode2
;; Download the latest ensime (https://www.dropbox.com/sh/ryd981hq08swyqr/V9o9rDvxkS/ENSIME%20Releases)
;; and move it over to ~/.emacs.d/ensime

;; Add the elisp directory your load-path:
(add-to-list 'load-path (concat dotfiles-dir "ensime/elisp"))

;; Now! some hooks to get things working:
(require 'ensime)
(add-hook 'scala-mode-hook 'ensime-scala-mode-hook)
(define-key ensime-mode-map (kbd "C-c C-b") 'ensime-inf-eval-buffer)
(define-key ensime-mode-map (kbd "C-c C-l") 'ensime-inf-load-file)
(define-key ensime-mode-map (kbd "C-c C-r") 'ensime-inf-eval-region)

(add-hook 'scala-mode-hook
          '(lambda ()
             ;; Alternatively, bind the 'newline-and-indent' command and
             ;; 'scala-indent:insert-asterisk-on-multiline-comment' to RET in
             ;; order to get indentation and asterisk-insertion within multi-line
             ;; comments.
             (local-set-key (kbd "RET")
                            '(lambda ()
                               (interactive)
                               (newline-and-indent)
                               (scala-indent:insert-asterisk-on-multiline-comment)))

             ;; Bind the 'join-line' command to C-M-j. This command is normally
             ;; bound to M-^ which is hard to access, especially on some European
             ;; keyboards. The 'join-line' command has the effect or joining the
             ;; current line with the previous while fixing whitespace at the
             ;; joint.
             (local-set-key (kbd "C-M-j") 'join-line)

             ;; Bind the backtab (shift tab) to
             ;; 'scala-indent:indent-with-reluctant-strategy command. This is usefull
             ;; when using the 'eager' mode by default and you want to "outdent" a
             ;; code line as a new statement.
             (local-set-key (kbd "<backtab>") 'scala-indent:indent-with-reluctant-strategy)
             ))