Merge pull request #10 from JoeBmc/master

Changes in readme suggested by Ravee.

README.md

@@ -42,7 +42,7 @@ In order for the plugin to collect statistics from Storm you need to ensure that
 |STORM_CLUSTER_SLOTS_TOTAL      |Total number of available worker slots on the cluster.                      |
 |STORM_CLUSTER_SLOTS_USED       |Number of worker slots used on the cluster.                                 |
 |STORM_CLUSTER_TASKS_TOTAL      |Total number of tasks on the cluster.                                       |
-|STORM_CLUSTER_SUPERVISORS      |Total number of supervisors on the cluster.			             |
+|STORM_CLUSTER_SUPERVISORS      |Total number of supervisors on the cluster.		              	             |
 |STORM_TOPOLOGY_TASKS_TOTAL     |Number of Tasks per toplogy.                                                |
 |STORM_TOPOLOGY_WORKERS_TOTAL   |Number of Workers per topolgy.                                              |
 |STORM_TOPOLOGY_EXECUTORS_TOTAL |Number of executors per topology.                                           |
@@ -54,16 +54,16 @@ In order for the plugin to collect statistics from Storm you need to ensure that
 |STORM_BOLT_CAPACITY            |Number of messages executed * average execute latency per second.           |
 |STORM_BOLT_EXECUTELATENCY      |Average time to run the execute method of the bolt per second.              |
 |STORM_BOLT_PROCESSLATENCY      |Average time of the bolt to ack a message after it was received per second. |
-|STORM_BOLT_LASTERROR           |1 if an error / exception was generated, 0 otherwise.                       |
+|STORM_BOLT_LASTERROR           |0-No error, 1-An error or exception occured.                                |
 |STORM_SPOUT_EXECUTORS          |Number of executors for the spout.                                          |
 |STORM_SPOUT_TASKS              |Total number of tasks for the spout.                                        |
 |STORM_SPOUT_EMITTED            |Number of messages emitted per spout per second.                            |
 |STORM_SPOUT_ACKED              |Number of messages acked per spout per second.                              |
 |STORM_SPOUT_FAILED             |Number of messages failed per spout per second.                             |
 |STORM_SPOUT_COMPLETELATENCY    |Total latency for processing the message per spout per second.              |
-|STORM_SPOUT_LASTERROR          |1 if an error / exception was generated, 0 otherwise.                       |
+|STORM_SPOUT_LASTERROR          |0-No error, 1-An error or exception occured.                                |
 
-LASTERROR value is received as nil or the error/exceptions string. We use the value 1 if lasterror is not nil and the field errorLapsedSecs is less than poll interval. Else the value is 0. This can be used in creating alerts for the error occured.
+For STORM_BOLT_LASTERROR and STORM_SPOUT_LASTERROR, 1 is used if there was an error, and the value for the errorLapsedSecs is less than the polling interval. 
 
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