Update examples

examples/counter.rb

@@ -4,8 +4,8 @@
 @metrics = Metrics::Agent.new
 @metrics.start
 
-counter = @metrics.add_instrument('counter', 'my_counter')
-counter.inc(1)
-counter.inc(1)
+counter = @metrics.counter :my_counter
+counter.incr
+counter.incr
 
 puts "Counter: #{counter.to_i}"

examples/gauge.rb

@@ -7,14 +7,13 @@
 hit_count = 42
 http_requests = 53
 
-gauge = @metrics.add_instrument 'gauge', 'my_gauge' do 
+gauge = @metrics.gauge :my_gauge do
   {
-    :hit_count => hit_count, 
+    :hit_count => hit_count,
     :http_requests => http_requests
   }
 end
 
-
 puts "Gauge: #{gauge.to_s}"
 
 hit_count = 65
@@ -24,4 +23,4 @@
 
 result = gauge.get
 
-puts "Result: #{result}"
+puts "Result: #{result}"

examples/meter.rb

@@ -4,15 +4,16 @@
 @metrics = Metrics::Agent.new
 @metrics.start
 
-timer = @metrics.add_instrument('meter', 'my_meter')
+timer = @metrics.meter :my_meter
 timer.mark(500)
 
 step = 0
 
 # This is here so that we will run indefinitely so you can hit the 
 # status page on localhost:8001/status
 loop do
-  sleep(1)
+  sleep 1
+
   modifier = rand(200).to_i
   step += 1