BF: binary file read for URL copy

I was reading binary but writing text.
RF: update current Python.org 2.7 version default

Use 2.7.8 as default Python.org version.
MAIN: egg-info, __pycache_ to .gitignore
NF: add pip requirements.txt

For smoother pip install.
NF: add command flag for delocating wheels

Turn off flag by default, it busts matplotlib wheel fetching because of
the tcl/tk library.
TST: first pass at travis testing

By making, installing, testing the scipy-stack installer.