simplekit.rb - updated comments, refactored Simulation to EventScheduler

Signed-off-by: pjs <pjs@alum.mit.edu>

lib/simplekit.rb

 require 'rubygems'
 require 'pqueue'
 
-# install the 'pqueue' gem before using SimpleKit:
-#   gem install pqueue
-#         or
-#   sudo gem install pqueue   # on Unix systems/OS X.
-
+# You must install the 'pqueue' gem before using SimpleKit:
+# <ul>
+#     <li>gem install pqueue<br>
+#         or<br>
+#     <li>sudo gem install pqueue&nbsp;&nbsp;&nbsp;&nbsp;# on Unix systems/OS X.
+#</ul>
+# Including SimpleKit gives you methods :run, :model_time, :schedule,
+# and :halt as mixins.  You <b>MUST NOT</b> provide your own implementations
+# of methods with these names in your model.  All but :run are
+# delegated to the EventScheduler class.
 module SimpleKit
-  # including SimpleKit gives you methods :run, :model_time,
-  # :schedule, and :halt as mixins.  You MUST NOT provide
-  # your own implementations of methods with these names in
-  # your model.  All but :run are delegated to the Simulation
-  # class.
   DELEGATED_METHODS = [:model_time, :schedule, :halt]
 
+  # Run the model by creating a new EventScheduler and invoking its run method.
   def run
-    @mySim = Simulation.new(self)
+    @mySim = EventScheduler.new(self)
     @mySim.run
   end
 
@@ -35,7 +36,7 @@ module SimpleKit
   #     <li>Instantiates a model and invokes
   #         the run() method to start execution.
   # </ul>
-  class Simulation
+  class EventScheduler
     attr_reader :model_time, :user_model
 
     def initialize(the_model)