rvm-install in rvm-0.0.13

- old
+ new

@@ -1,5 +1,19 @@
-#!/usr/bin/env ruby
+#!/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby
+#
+# This file was generated by RubyGems.
+#
+# The application 'rvm' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
 
-# Hot potato!!! Bash it!
-exec "bash -c 'cd #{File.dirname(File.dirname(__FILE__))} && ./bash/rvm-install #{ARGV.join(' ')} ; source ~/.bash_profile'"
+require 'rubygems'
 
+version = ">= 0"
+
+if ARGV.first =~ /^_(.*)_$/ and Gem::Version.correct? $1 then
+  version = $1
+  ARGV.shift
+end
+
+gem 'rvm', version
+load Gem.bin_path('rvm', 'rvm-install', version)