remove .fade from static modal example, but include in code snippet

BS3 commit 9d9fd5e
Use @font-size-... variables instead of hardcoded font-size in px

BS3 commit 747e108
Use @font-size-... variables instead of hardcoded font-size in px
include info on the Bootstrap CDN

BS3 commit 7cceaa6
add support for nested button groups so you can use dropdowns in your button groups

BS3 commit 7d41a38
update to the latest BS3 build