Fix timeout deprecation on recent rubies

* Use Timeout.timeout, not Object#timeout

Author: rgarner

lib/webmachine/spec/adapter_lint.rb

@@ -22,7 +22,7 @@
   let(:client) do
     client = Net::HTTP.new(application.configuration.ip, port)
     # Wait until the server is responsive
-    timeout(5) do
+    Timeout.timeout(5) do
       begin
         client.start
       rescue Errno::ECONNREFUSED

spec/webmachine/adapters/reel_spec.rb

@@ -56,7 +56,7 @@
   def reel_server(adptr = adapter)
     thread = Thread.new { adptr.run }
     begin
-      timeout(5) do
+      Timeout.timeout(5) do
         begin
           sock = TCPSocket.new(adptr.application.configuration.ip, adptr.application.configuration.port)
           begin