coverage.py creates HTML reports in the htmlcov directory (this tool can also be used with coveralls.io)
http://nedbatchelder.com/code/coverage/
https://pypi.python.org/pypi/coverage

Rope (https://bitbucket.org/zjes/rope_py3k/overview) is a refactoring tool for Python. It creates temporary files in `.ropeproject` to cache data. These files should be ignored by default.

`.cache` is generated when unittests are run with py.test

This commit also alphabetizes the distribution/packaging section after
separating the directory entries from the file entries.  I left alone
a few entries that I'm not sure about (i.e. *.egg and the
"Mr Developer" section).

Commenting the only ignore that isn't commented.

nosetests.xml is created by the 'nose' test runner when you want xml output, for instance for integration with jenkins.