chaos: small style changes
chaos: make Kill action match other actions
chaos: added name to actions
pantera: added new run function, and rename old run to random_run

The run function takes the action to run.
tests: fix test case name
pantera/run: raise exception when action does not exist
setup: improve description
readme: update instructions
pantera: added list_actions function

This function returns a list of available actions.
readme: rewrite file in RST format

RST is supported by PyPI.
manifest: include README.rst file
setup: read long_description from README.rst