adds first version of the expanded as assembler from mikko

lib/elf/text_section.rb

@@ -0,0 +1,21 @@
+module Elf
+  class TextSection < Section
+    attr_accessor :text
+
+    def write(io)
+      io << text
+    end
+
+    def type
+      Elf::Constants::SHT_PROGBITS
+    end
+
+    def flags
+      Elf::Constants::SHF_ALLOC | Elf::Constants::SHF_EXECINSTR
+    end
+  
+    def alignment
+      4
+    end
+  end
+end