Debpackager

------

- Fixed issue where excludes were ignored
- removed "--always-copy" hardcoded interpreter option, when creating new virtualenv

------

- Small updates to setup.py

- Fixed issue of disappearing README at pypi

------
- Added support to project.json to supply
custom virtualenv arguments.

- Added new option to the cli tool, to only generate debian files,
without building the package

- Now the build command will either build from existing build files
if they exists, or generate new build files from scratch and then build

- Minor general fixes and cleanup

- More tests

------
- Minor cleanup

- more tests added

------
- Circle CI support added

- readme updated

- support for adding description to debain package

- more tests added

-------------
- tox support added

- Minor syntax fixes