added first english version #111
Reflected review comments #111
reflect review comments of #115. #111
add define of build_en directory to .gitignore file. #111
reviewed and updated domain layer #111
formatting changes #111
reflected changes related to #117 of japanese version #111
changes related to #2 #112 #117 in english version #111
added first english version #111
Reflected review comments #111
reflect review comments of #115. #111
add define of build_en directory to .gitignore file. #111
reviewed and updated domain layer #111
formatting changes #111
reflected changes related to #117 of japanese version #111
changes related to #2 #112 #117 in english version #111
Merge branch 'issues/111' of https://github.com/terasolunaorg/guideline into issues/111
changes related to #50 of japanese version and other formatting changes #111
reflected review comments #111
changes related to review comments #111