diff --git a/History.txt b/History.txt
index 0b2be85..3a6ad10 100644
--- a/History.txt
+++ b/History.txt
@@ -1,3 +1,13 @@
+*** 3.5.0 / 2005-10-15
+
++ 4 minor enhancements
+	+ Switched to install for Makefile.
+	+ Lots of minor cleanup.
+	+ Added add_to_init to extend init methods. Great hack!
+	+ Added 2 demo files used in the rubyconf 2005 presentation.
++ 1 bug fix
+	+ Fixed example in README.txt. OOPS!
+
 *** 3.4.0 / 2005-07-13
 
 + 2 minor enhancement
diff --git a/demo/fastmath.rb b/demo/fastmath.rb
new file mode 100644
index 0000000..af9aee3
--- /dev/null
+++ b/demo/fastmath.rb
@@ -0,0 +1,27 @@
+
+begin require 'rubygems' rescue LoadError end
+require 'inline'
+
+class FastMath
+  def factorial(n)
+    f = 1
+    n.downto(2) { |x| f *= x }
+    return f
+  end
+  inline do |builder|
+    builder.c "
+    long factorial_c(int max) {
+      int i=max, result=1;
+      while (i >= 2) { result *= i--; }
+      return result;
+    }"
+  end
+end
+
+math = FastMath.new
+
+if ARGV.empty? then
+  30000.times do math.factorial(20); end
+else
+  30000.times do math.factorial_c(20); end
+end
diff --git a/demo/hello.rb b/demo/hello.rb
new file mode 100644
index 0000000..a3bab0b
--- /dev/null
+++ b/demo/hello.rb
@@ -0,0 +1,13 @@
+#!/usr/local/bin/ruby -w
+
+begin require 'rubygems' rescue LoadError end
+require 'inline'
+
+class Hello
+  inline do |builder|
+    builder.include "<stdio.h>"
+    builder.c 'void hello() { puts("hello world"); }'
+  end
+end
+
+Hello.new.hello
diff --git a/inline.rb b/inline.rb
index 55a402e..b360b94 100644
--- a/inline.rb
+++ b/inline.rb
@@ -276,6 +276,7 @@ def initialize(mod)
       @sig = {}
       @flags = []
       @libs = []
+      @init_extra = []
     end
 
     ##
@@ -337,6 +338,9 @@ def build
             end
 	    io.puts  "(VALUE(*)(ANYARGS))#{name}, #{arity});"
 	  end
+
+          io.puts @init_extra.join("\n") unless @init_extra.empty?
+
 	  io.puts
 	  io.puts "  }"
 	  io.puts "#ifdef __cplusplus"
@@ -420,6 +424,13 @@ def add_link_flags(*flags)
       @libs.push(*flags)
     end
 
+    ##
+    # Adds custom content to the end of the init function.
+
+    def add_to_init(*src)
+      @init_extra.push(*src)
+    end
+
     ##
     # Registers C type-casts +r2c+ and +c2r+ for +type+.