- adapted README.md to install and use with Composer from fit-skeleton,
  extracting doc/ConfigManually.md, increased PHP version requirement
increased to 5.1 because PHPFIT requires it
  replaced instructions for manual install and usage by reference to
original README.md in doc,
  added reference for Mixed Data Typing with
PHPFIT_TypeAdapter_PhpTolerant,
  added security warnings.
- lowered PHP version requirement in composer.json to 5.1 (after
testing)
- added script/run-cli.php for running from the command line
- adapted script/config_shelf.php to support run-cli.php
- added ChangeLog.md