Enh: travis and  coveralls support + moving from setuptools to pure distutils (closes #41)

also removed some not needed shebangs

example travis reports
https://travis-ci.org/yarikoptic/ggplot/builds
someone would need to simply enable now for yhat/ggplot on travis.ci.org to take in effect... and then on coveralls.io (forgot to enable in advance so not sure yet if works ok here ;) )