use tox without the .travis-runtox script
remove .travis-runtox.py
merge --index-url changes
remove scripts subdirectory

I think lowks has moved on.
build universal wheel
merge "universal wheel" changes
make pypiserver executable from wheel file

i.e. python pypiserver-1.1.x-py2.py3-none-any.whl/pypiserver will now
start pypiserver
serve wheel files as application/octet-stream
pyg is dead, don't link to it
test package name and version guessing with wheel files

see https://github.com/schmir/pypiserver/issues/44
better handling for wheel files

use pip's wheel regex. this should fix #44.
only list devpi-server and proxypypi as alternatives

I don't feel comfortable pointing people to these other
implementations...
update copyright year
link to https url for downloads
prepare 1.1.5
add --xmlrpc-url option, --index-url was wrongly used for XMLRPC connections