Removed caching from halt method.
Remove duplicates from loader directories.
Updated handling of subdirectories and redirects.
Updated check for base_url.
Added section about configuration values.
Update README.md

Fixes #53

Signed-off-by: enyst <engel.nyst@gmail.com>
Document instance calls fix.

Signed-off-by: enyst <engel.nyst@gmail.com>
Merge pull request #55 from engelnyst/patch-1

Documentation fix
Updated all tests to use Engine class.
Updated methods section
Flush existing output before the start method.
Made default properties into class variables.
Setting status should not send headers.
Exception should be thrown and not handled.
Autoloader should not throw exceptions.