renamed program to assembler (to avoid clashes in vm)

lib/asm/assembler.rb

@@ -6,14 +6,14 @@ require "asm/string_literal"
 
 module Asm
   
-  # Program is the the top-level of the code hierachy, except it is not derived from code
-  # instead a Program is a list of blocks (and string constants)
+  # Assembler is the the top-level of the code hierachy, except it is not derived from code
+  # instead a Assembler is a list of blocks (and string constants)
   
   # All code is created in blocks (see there) and there are two styles for that, for forward of backward
   # referencing. Read function block and add_block and Block.set
   
   
-  class Program
+  class Assembler
 
     def initialize
       @blocks = []

lib/asm/block.rb

@@ -119,7 +119,7 @@ module Asm
     end
 
     # length of the codes. In arm it would be the length * 4
-    # (strings are stored globally in the Program)
+    # (strings are stored globally in the Assembler)
     def length 
       @codes.inject(0) {| sum  , item | sum + item.length}
     end

lib/crystal.rb

@@ -1,6 +1,6 @@
 require 'parslet'
 
-require "asm/program"
+require "asm/assembler"
 require "elf/object_writer"
 require 'parser/composed'
 require 'parser/transform'