diff --git a/README.md b/README.md
index 2aef417..252216b 100644
--- a/README.md
+++ b/README.md
@@ -73,6 +73,12 @@ Start adding your names here:
 - [![twitter-alt][twitter-img]](https://twitter.com/shubhamnishad97)
   [![github-alt][github-img]](https://github.com/shubhamnishad97)
 
+### Mathieu Jolivet (Cynferdd)
+- Developper as a hobby since 1996, professionaly since 2005.
+- Bass player, I also love reading, photography and beer.
+- [![twitter-alt][twitter-img]](https://twitter.com/cynferdd)
+  [![github-alt][github-img]](https://github.com/cynferdd)
+
 ### Example Profile
 - I'm an example that you can copy, if you want :)
 - I work for...
diff --git a/code/fibonacci.rb b/code/fibonacci.rb
new file mode 100644
index 0000000..72c9d8c
--- /dev/null
+++ b/code/fibonacci.rb
@@ -0,0 +1,21 @@
+#####################
+# Fibonacci in Ruby #
+#####################
+ # main fibonacci function
+def CalculateFibonacci(n)
+    if (n == 0) 
+        return 0
+    elsif (n <= 2)
+        return 1
+    else
+        return CalculateFibonacci(n - 1) + CalculateFibonacci(n - 2)
+    end
+end
+ # execution with check regarding the amount of args
+if(ARGV.length < 1)
+    puts "argument needed. term number to iterate to, with 0 as the first term number"
+else
+    for arg in ARGV
+        puts arg.to_s + ": " + CalculateFibonacci(arg).to_s
+    end
+end