a start on conditionals

lib/vool/if_statement.rb

@@ -1,5 +1,19 @@
 module Vool
   class IfStatement < Statement
-    attr_accessor :branch_type , :condition , :if_true , :if_false
+    attr_accessor :condition , :if_true , :if_false
+
+    def initialize( cond  = nil)
+      @condition = cond
+      @if_true = []
+      @if_false = []
+    end
+
+    def has_false?
+      @if_false != nil
+    end
+
+    def has_true?
+      @if_true != nil
+    end
   end
 end