exe/go-install in go-install-0.1.2 vs exe/go-install in go-install-0.1.3

@@ -29,11 +29,11 @@
 if Process.uid != 0
   puts 'go-install requires privilege.'
   exit 1
 end
 
-versions = open('https://golang.org/dl/').read.scan(/go(\d+\.\d+\.\d+)/).flatten.uniq
+versions = URI.open('https://golang.org/dl/').read.scan(/go(\d+\.\d+\.\d+)/).flatten.uniq
 latest = versions.first
 
 if ARGV[0] == 'latest'
   version = latest
 elsif versions.include?(ARGV[0])
@@ -83,10 +83,10 @@
 
 puts "Download from #{uri}"
 puts cmd
 
 open("|#{cmd}", 'r+') { |io|
-  io.write open(uri).read
+  io.write URI.open(uri).read
 }
 
 puts <<EOM
 
 go#{version} is installed in /usr/local/go .