Added README.md
Added autoloader
Added tests

Added abstract IteratorTestCase with some standard assertions.

- Added phpunit.xml.dist
- Added assertIterationValues() method
- Added assertIteration() method
Updated .gitignore
Added TraversableDecorator
Added IteratorDecorator
Added ForeachIterator
Added CountableForeachIterator
Added IndexIteration
Added SeekableIteration
Added Example seekable-iteration.php
Added IterationStep
Added FullCachingIterator
Added Debug-Iterators

- Added STDERR output mode
Added RangeIterator
Added CountFilterIterator