explain how to user the library
added the example database
add the StatementIterator to use instead of an array
add namespace declaration
missing backslash before PDOException
some fixes to be more PSR friendly
Merge pull request #2 from Faryshta/readme

Readme update
Merge pull request #3 from Faryshta/StatementIterator

Statement iterator
Merge pull request #4 from Faryshta/psrfix

Psrfix
Merge branch 'master' of github.com:rainphp/RainDB
updated the examples
updated readme as markdown
Improve performance: when there aren't fields use PDO::query instead of PDO::prepare
Update README.md
Update with a small example
Added autoload class
Updated query in test
Updated StatementIterator
Updated getAll, now return an Iterator, and added  getAllArray
updated example