Include the external required tools.
Update README.rst
This is now a working project. Tested against the bootstrap script.
Split execution into several methods and added some more.

* Added pre/post clean up methods
* Clean up options now have it's own option group
* Added a method to setup additional options
* Added a `__validate` method which validates original options and calls the `validate_options` method
* Added a `validate_options` which should when overridden validate the additional options added
* Logging is now setup on it's own method
* Added a `finalize` method which will call reporting and exit with the passed exit code.
Added `salttesting.helpers` which includes the original salt unit testing helpers.
Fix indentation and formatting on `salttesting.ext.console`
Add a `SaltTestcaseParser` option parser and `run_testcase` helper function to simplify `__main__` test suite executions.
Salt testing now includes a code coverage aware testing option parser.
Added a custom and reusable shell test case(from salt's integration suite).
Add a mixins module
`salttesting.parser` is also a package to include.
`coverage.process_startup()` should be called really soon.
Add `salttesting.helpers.relative_import`.
Add `salttesting.helpers.ensure_in_syspath`. Less intrusive approach.
Update/correct comments
Fix NameError
Allow multiple paths to be passed to `ensure_in_syspath`.
Added a context aware class to raise import errors.

Sometimes while mocking tests we need to trigger `ImportError`'s in order to test for fallback code.
Added `MockWraps` to be used with the mock library.

The idea is for `MockWraps` to be used in the `wraps` keyword of `Mock` or `MagicMock` where you want to trigger a side effect for X times, and afterwards, call the original and un-mocked method.
Add the destructive tests logic to salt-testing.

Since it's `salt-testing` that provides the `destructiveTest` decorator, it only makes sense to be `salt-testing`'s parsers to provide the required option switch and logic to set the required environment.