Tidy up spec, fix timeout when running with coverage.

spec/async/redis/client_spec.rb

@@ -81,15 +81,16 @@
 		client.close
 	end
 
-	it "retrieves large responses from redis" do
-		num_elems = 5000
+	it "retrieves large responses from redis", timeout: 30 do
+		count = 5000
+
 		client.call("DEL", list_key)
-	  num_elems.times { |i| client.call("RPUSH", list_key, i) }
-
-		response = client.call("LRANGE", list_key, 0, num_elems - 1)
-
-		expect(response).to eq (0...num_elems).map(&:to_s)
-
+		count.times {|i| client.call("RPUSH", list_key, i) }
+		
+		response = client.call("LRANGE", list_key, 0, count - 1)
+		
+		expect(response).to eq (0...count).map(&:to_s)
+		
 		client.close
 	end
 end