update readme with package.el installation steps
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@ -29,10 +29,12 @@ it, and pressing `C-j`:
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Rust mode will automatically be associated with .rs and .rc files. To
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enable it explicitly, do `M-x rust-mode`.
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### package.el installation via Marmalade or Melpa
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### package.el installation via Marmalade
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It can be more convenient to use Emacs's package manager to handle
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installation for you if you use many elisp libraries.
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installation for you if you use many elisp libraries. If you have
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package.el but haven't added Marmalade, the community package source,
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yet, add this to ~/.emacs.d/init.el:
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```lisp
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(require 'package)
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@ -41,12 +43,10 @@ installation for you if you use many elisp libraries.
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(package-initialize)
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```
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```lisp
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(require 'package)
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(add-to-list 'package-archives
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'("melpa" . "http://melpa.milkbox.net/packages/") t)
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(package-initialize)
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```
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Then do this to load the package listing:
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* <kbd>M-x eval-buffer</kbd>
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* <kbd>M-x package-refresh-contents</kbd>
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If you use a version of Emacs prior to 24 that doesn't include
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package.el, you can get it from http://bit.ly/pkg-el23.
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@ -56,6 +56,17 @@ should upgrade in order to support installation from multiple sources.
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The ELPA archive is deprecated and no longer accepting new packages,
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so the version there (1.7.1) is very outdated.
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From there you can install rust-mode or any other modes by choosing
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them from a list:
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* <kbd>M-x package-list-packages</kbd>
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Now, to install packages, move your cursor to them and press i. This
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will mark the packages for installation. When you're done with
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marking, press x, and ELPA will install the packages for you (under
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~/.emacs.d/elpa/).
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* or using <kbd>M-x package-install rust-mode
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#### Important
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