Add web_console gemspec

Back in the days I haven't read the [name your gem] guide. We have a
chance of fixing the name before release.

[name your gem]: http://guides.rubygems.org/name-your-gem/
Merge pull request #77 from gsamokovarov/web_console_gemspec

Add web_console gemspec
Prepare for 2.0.0 release

If you guys anything else should be done, please, ping me :)