Cleaned up long lines.
Added venv ignore.
Added deps files for Python (pip).
Added Makefile with targets to replace scripts.

Also added targts for setting up Python2 virtualenv.
Removed scripts that have been replaced with make targets.
More README tweaks.
Fixed perms on .erl files.
Moved script into bin dir.
Added ebin to ignores.
Added missing app.src file.
Added Erlang deps.
Removed files that are part of deps.
Moved start scripts into bin dir.
This is now supplied with the sandbox dep.
Moved demo notebook into own dir.
Removed modules that are now in deps.
Changed to use rebar.
Moved script functionality into Makefile.
Moved most of the script code into its own module.

Also: renamed script.
Several things:

* Fixed typo in py2shell target that make was halting on
* Added missing deps to ERL_LIBS
* Fixed project library path to be absolute
* Updated script name