Fix packaging. Include distribute_setup.py with MANIFEST.in

Packaging on PyPI broke because distribute_setup.py was not included
in the distribution package as it was not being regarded as package
data. Due to that, downloads from PyPI using pip were failing. This
commit fixes that issue.

Update version to 0.1.3-p02
Update installation instructions

Separate installation without Pip and with Pip. Also on virtualenv,
don't use `--distribute` option as it is likely to cause dependency
errors when installing via pip.