Refactor build_doc.py
Refactor build_doc.py

- collector arg is now honored
- add handler arg

gg7/diamond,python-diamond/Diamond,skbkontur/Diamond,skbkontur/Diamond,MichaelDoyle/Diamond,gg7/diamond,python-diamond/Diamond,gg7/diamond,gg7/diamond,tusharmakkar08/Diamond,skbkontur/Diamond,MichaelDoyle/Diamond,tusharmakkar08/Diamond,skbkontur/Diamond,MichaelDoyle/Diamond,tusharmakkar08/Diamond,python-diamond/Diamond,MichaelDoyle/Diamond,tusharmakkar08/Diamond