Merge pull request #7 from hotwatermorning/build_documents

build documents from 5241536
fix English.
add concept check. add test to bjam.
add example : is_sorted.
fix English.
fix warning (always true condition)
Merge branch 'master' of https://github.com/faithandbrave/OvenToBoost
fix unused variable warning
add tapped adaptor via Ruby's tap method.
tapped : lazy evaluation to strict evaluation
tapped : refactor, and auto memoization.
tapped : refactor
add tapped test
add as_container document.
Fix a typo
Build html documents from 4fe4452ee4d35edca35c95602be2328bd71afefc