sphinxでうまいこと仮想環境を見てくれない時

1The 'sphinx-build' command was not found. Make sure you have Sphinx
2installed, then set the SPHINXBUILD environment variable to point
3to the full path of the 'sphinx-build' executable. Alternatively you
4may add the Sphinx directory to PATH.
5
6If you don't have Sphinx installed, grab it from
7http://sphinx-doc.org/

1if "%SPHINXBUILD%" == "" (
2	set SPHINXBUILD=python -m sphinx
3)

1SPHINXBUILD   = python -m sphinx