add some explanation and use github gem versions

lib/main_view.rb

@@ -13,8 +13,17 @@ class MainView < ListView
 
   def initialize
     machine = Virtual.machine.boot
-    code = Ast::OperatorExpression.new("+", Ast::IntegerExpression.new(2),Ast::IntegerExpression.new(5))
-    Virtual::Compiler.compile( code , machine.space.get_main )
+
+    # compile_main includes the parse
+    # parsing generates an ast as seen below and then compiles it.
+    machine.compile_main "2 + 5"
+
+    # so the code above is functionally equivalent to the one below, minus the parse
+    # When the ast expression is given all works, so pretty sure it is the parse that fails
+
+    # code = Ast::OperatorExpression.new("+", Ast::IntegerExpression.new(2),Ast::IntegerExpression.new(5))
+    # Virtual::Compiler.compile( code , machine.space.get_main )
+
     machine.run_before "Register::CallImplementation"
     @interpreter = Interpreter::Interpreter.new
     @parent = $document.body
@@ -25,7 +34,7 @@ class MainView < ListView
   def draw
     node = DOM {
         div.info {
-          span.red "I'm all cooked up."
+          span.red "Ready to start."
         }
       }
       node.append_to(@parent)