had forgotten calls on instance variables. corrected + tests

lib/ast/call_site_expression.rb

@@ -40,6 +40,10 @@ module Ast
     def initialize name
       super( :_get_instance_variable  , [StringExpression.new(name)] )
     end
+    def inspect
+      self.class.name + ".new(" + args[0].string.inspect + ")"  
+    end
+
   end
   
 end

lib/parser/call_site.rb

@@ -9,7 +9,7 @@ module Parser
           space? >> right_parenthesis
     }
 
-    rule(:call_site) { ((module_name|name).as(:receiver) >> str(".")).maybe >> #possibly qualified
+    rule(:call_site) { ((module_name|instance_variable|name).as(:receiver) >> str(".")).maybe >> #possibly qualified
                           name.as(:call_site) >> argument_list >> comment.maybe}