Update USAGE.md to reflect changes to the constructor

Allow changing PostgreSQL connection port

Fix AS in column names (#11)

Update README.md with more migration notes

PSR-2 compliance and adding PHP_CodeSniffer ruleset

Make all constructor arguments optional & deprecate pdo() method

Fix some RuntimeException throw lines

Improve documentation and behavior of RETURNING clause generation (#7)

Fix some typos in README.md and USAGE.md

Update README.md

PHP 5.4 support (#6)

Update USAGE.md

Update USAGE.md

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Update metadata