Removed bundled (old) versions of BeautifulSoup.py

BeautifulSoup.py seems to be available in the common linux distros. Otherwise, it can
be installed with 'pip install BeautifulSoup'

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=895228
Change back perms for bin/gourmet to 755.
Merge pull request #689 from jraber/unbundleBeautifulSoup

Removed bundled (old) versions of BeautifulSoup.py
Mention BeautifulSoup in the Extra Requirements section of README.md.