<NME> CONTRIBUTORS
<BEF> Jakub Šťastný aka Botanicus (main author)
Martin Hrdlička
Simon Hafner aka Tass

<MSG> Added grantmichaels to contributors as thanks for his great article for RubyInside

<DFF> @@ -1,2 +1,3 @@
 Jakub Šťastný aka Botanicus (main author)
+Grant Michael Levkoff aka grantmichaels (wrote awesome http://www.rubyinside.com/rango-ruby-web-app-framework-2858.html)
 Martin Hrdlička

Added grantmichaels to contributors as thanks for his great article for RubyInside