What Are The Various Changes Between The Rails Version 2 And 3?

1.	What Are The Various Changes Between The Rails Version 2 And 3?
Answer» Introduction of bundler (NEW way to MANAGE your GEM dependencies) Gemfile and Gemfile.lock (where all your gem dependencies lies, instead of environment.rb) HTML5 SUPPORT

Answer»

Introduction of bundler (NEW way to MANAGE your GEM dependencies)
Gemfile and Gemfile.lock (where all your gem dependencies lies, instead of environment.rb)
HTML5 SUPPORT

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