Remove needless style settings.
Merge branch 'feature/theme-default-reduce' into gh-pages
Use #333 for normal text.
"shout" is not used.
Merge branch 'feature/theme-default-color' into gh-pages
Reduce the bottom mergin of paragraph.
Merge branch 'feature/theme-default-margin' into gh-pages
The title slide has the title and the author name.
Shout the simple message.
Merge branch 'feature/theme-default-title' into gh-pages
Use "haikimidori" for the background".
Change the color of progressbar. Use the same color as the background of shout slides.
Merge branch 'feature/theme-default-normal-slide' into gh-pages