Update README.md
add jekyll-bootstrap
add _site/ to .gitignore
pages list
sample post
add twitter bootstrap
add subtub ligo image

https://raw.github.com/subtub/subtub.media/master/logos/subtub_logo_100p
x.png
add project page
add subtub.theme submodule
add subtub.media submodule
Merge pull request #1 from subtub/develop

v0.1.0 merge develop into master