Don't use Inconsolata font for code.
Make Arial to be the main font, and justify text.
Small changes.
Ignore .ruby-version and .ruby-gemset files.
Update the gemset.
Add Twitter Bootstrap v3.0.0.
Add JS scripts from Bootstrap in the analogy with those in example 'theme'.
Because 'asset_path' isn't supported in LESS, move fonts and images from the directory of 'jekyll-assets'.
ColorBox: replace 'asset_path' by absolute path.
Add Ruby gems for parsing LESS.
Modify the head section of default layout.
Change the core stylesheet to Bootstrap. Import the LESS files.
Create the navbar based on Bootstrap.
Create the page header based on Bootstrap.
Don't specify Sans Serif, because it's the base font family.
Change the height of the navigation bar.
Add sticky footer.
Fix the page-shift problem.
Modify CSS for headlines and links.
Adjust the content wrapper to Bootstrap grid system.