textproc/py-stripogram: update to 1.5, deprecate

• update to 1.5
• limit python to 2.x (fails to build with 3.x)
• switch to PyPi
• deprecate and set expiration date to 2015-08-05. User should use www/py-html5lib or www/py-beautifulsoup instead.

Here is what author writes about:
Unless you have some historical reason for using this package, I’d advise
against it! [1]

[1] https://pypi.python.org/pypi/stripogram