Merge pull request #1 from denyago/master

Slides for Rack topic
move images to publick Rack
Merge pull request #4 from suchov/master

move images to publik "Rack"
using relative pathes with this directory structure
Merge pull request #5 from sudodoki/master

using relative paths with this directory structure
Ruby basics
merge
Add slides to RubyBasics
oop
oop hierarchy, self, singleton method
oop extend
class hierarchy schema image to assets
Merge pull request #7 from evsyukovmv/oop

oop
oop improve with exceptions
Merge pull request #8 from evsyukovmv/oop

oop improve with exceptions
Small fixes for OOP
metaprogramming upd
procs not needed
Merge pull request #9 from RubyGarage/meta

metaprogramming slides
Meta