add doc path in get_default_paths
yujin_doc_make initial draft
some text  colouring
instead of providing yujin_doc_make, provide yujin_make doc arguements
update argument comment
renaming to follow naming convention
pep8
parse cmake configuration to set document root
add error if rosdoc_lite is not avilable
Merge pull request #32 from yujinrobot/yujin_doc_make

yujin_doc_make first draft