moved CONTRIBUTING section from README into CONTRIBUTING.md
Stylesheet scaffold updates
- Added _config.scss for configuring themes/plugins
- Changed user style scaffold to _style.scss
- Updated sass-globbing gem (supporting optional imports)
- Themes now default to _index.scss, plugins to _style.scss
Merge pull request #1263 from codebykat/2.1

moved CONTRIBUTING section from README into CONTRIBUTING.md
Update CONTRIBUTING.md with a bit more info.
Make CONTRIBUTING file extname consistent with the other markdown files.
Fixed config-tag bug where it would not work for dot notation in keys. The plugin is now broken out into a plugin and a helper.
Added new url helpers and config helper, updated config-tag and url filters to use these new helpers
Add Octopress::Command
Add Octopress::Commands::Scaffold
Add lib/scaffold
Set log level to INFO like it should be.
Add Octopress VERSION and require all commands
A brief Commander scaffold for the "octopress" command
Add basic Octopress gemspec.
Ensure the new plugin's validate rake task uses the Ruby filename conventions.
Refactor Scaffold command a bit
Add ./lib/rake to the list of scaffolded directories.
Disabling installation and generation in :test rake task.
Add rubocop as development dependency for gem.
Update dependencies.