use proxy in heroku logs

gistfile1.diff

diff --git a/lib/heroku/client.rb b/lib/heroku/client.rb
index 9080906..2cab092 100644
--- a/lib/heroku/client.rb
+++ b/lib/heroku/client.rb
@@ -376,8 +376,15 @@ Console sessions require an open dyno to use for execution.
       puts get("/apps/#{app_name}/logs").to_s
     else
       uri  = URI.parse(url);
-      http = Net::HTTP.new(uri.host, uri.port)
 
+      http = nil 
+      if ENV['HTTP_PROXY'] || ENV['http_proxy']
+        ( ENV['HTTP_PROXY'] || ENV['http_proxy'] ) =~ %r|http://(?:(.*):(.*)@)?(.*):(\d+)/?|
+        http = Net::HTTP::Proxy( $3, $4, $1, $2 ).new( uri.host, uri.port )
+      else
+        http = Net::HTTP.new(uri.host, uri.port)  
+      end
+      
       if uri.scheme == 'https'
         http.use_ssl = true
         http.verify_mode = OpenSSL::SSL::VERIFY_NONE