Added specifics on how the setuptools/distribute .egg lookup is done when --never-download is used, as specified by @carljm in #202.
Added specifics on how the setuptools/distribute .egg lookup is done
when --never-download is used, as specified by @carljm in #202.

francatore/virtualenv,vvtam/virtualenv,RAS-ViVa/virtualenv,davidszotten/virtualenv,mykemunson/virtualenv,dstufft/virtualenv,haridsv/virtualenv,techtonik/virtualenv,madprog/virtualenv,ionelmc/virtualenv,blueyed/virtualenv,Seha16/virtualenv,bigplus/virtualenv,dstufft/virtualenv,msabramo/virtualenv,ionelmc/virtualenv,ionelmc/virtualenv,mykemunson/virtualenv,techtonik/virtualenv,blueyed/virtualenv,vvtam/virtualenv,jedie/virtualenv,davidszotten/virtualenv,Lyleo/virtualenv,msabramo/virtualenv,Ivoz/virtualenv,Lyleo/virtualenv,Ivoz/virtualenv,bigplus/virtualenv,kissthink/virtualenv,haridsv/virtualenv,msabramo/virtualenv,Seha16/virtualenv,RAS-ViVa/virtualenv,francatore/virtualenv,jedie/virtualenv,madprog/virtualenv,kissthink/virtualenv