Reverting "Document that starter-kit-ruby users need tromey.com for p…

…ackages."

Not needed with newer inf-ruby versions.
This reverts commit 9f374a6.

README.markdown

@@ -53,19 +53,6 @@ Other modules are also available:
 
 These modules are installed separately from the base Starter Kit package.
 
-If you are going to use starter-kit-ruby, you'll need to add
-tromey.com as a package source as well as Marmalade. starter-kit-ruby
-depends on packages that exist on tromey.com, but not on Marmalade.
-
-```Lisp
-(require 'package)
-(add-to-list 'package-archives
-             '("marmalade" . "http://marmalade-repo.org/packages/") t)
-(add-to-list 'package-archives
-             '("tromey" . "http://tromey.com/elpa/") t)
-(package-initialize)
-```
-
 It's recommended to create a list of packages in init.el which will be
 installed if they are found to not be present: