Merge pull request #26 from ooglek/master

Updating Gauge Documentation

README.md

@@ -68,11 +68,20 @@ $statsd->memory('foo.memory_peak_usage');
 
 ### [Gauges](https://github.com/etsy/statsd/blob/master/docs/metric_types.md#gauges)
 
-statsd supports gauges, arbitrary values which can be recorded.
+statsd supports gauges, arbitrary values which can be recorded. 
+
+This method accepts both absolute (3) and delta (+11) values. 
+
+*NOTE:* Negative values are treated as delta values, not absolute.
 
 ```php
 <?php
+// Absolute value
 $statsd->gauge('foobar', 3);
+
+// Pass delta values as a string. 
+// Accepts both positive (+11) and negative (-4) delta values.
+$statsd->gauge('foobar', '+11'); 
 ```
 
 ### [Sets](https://github.com/etsy/statsd/blob/master/docs/metric_types.md#sets)

lib/Connection/InMemory.php

@@ -6,7 +6,7 @@
 
 /**
  * This connection collects all messages but is not sending them. This eases

- * feature testing when you want to assert that a specific set of messages where created.

+ * feature testing when you want to assert that a specific set of messages were created.

  */
 class InMemory implements Connection
 {