renamed tests.py

--HG--
rename : tests.py => test_numconv.py
Now using pytest for the test suite, and distribute/setuptools instead of distutils
reorganizing tests to help jenkins

--HG--
rename : test_numconv.py => test/test_numconv.py
tweaks in .coveragerc
Updated README
adding jenkins scripts to version control
updated tox.ini to use the new jenkins scripts
updated coveragerc
coveragerc
.coveragerc
jenkins tweaks
Updated coveragerc to use the new jenkins configuration