changed pyFileZilla version to 0.1-alpha
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- updated pyFileZilla.VERSION to 0.1-alpha in pyFileZilla/__init__.py
updated pyFileZilla docstrings and formatted with reST (reStructuredText)
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- added docstrings to ftpGroup and ftpSecurityBase and reformatted
  docstrings using reST (pyFileZilla/ftpSettings.py)
added sphinx for building documentation
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- added sphinx config file sphinx/conf.py and pages sphinx/index.rst and
  sphinx/pyFileZilla.rst
added .gitignore
added doc folder for html documentation
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- added sphinx/publish.bat for copying the built html documentation to doc
- added current documentation in doc folder
- updated .gitignore