add +__if_+ for more flexible rendering
pep008 clean code
fix bad path on test_subdirectories_created
tests coverage 100% with +__if_rdr.me__+ statement
document +__if_render.me__+ statement
oups remover two minor errors on pep8
fix #38 rename exceptions to bobexceptions
improve starter with a bobtemplates egg skeleton
update doc with conditionnal rendering, and bobtemplates.starter user guide fix #41
merge