Adjust directory structure and coding style

.gitignore

.hgignore

build.local.xml

build.properties

build.xml

composer.json

package.xml

phpunit.xml

phpunit.xml.dist

src/HAB/Pica/Parser/PicaPlainParser.php

src/HAB/Pica/Reader/PicaPlainReader.php

src/HAB/Pica/Reader/PicaXmlReader.php

src/HAB/Pica/Reader/Reader.php

src/README.txt

src/bin/.empty

src/data/.empty

src/docs/.empty

src/php/.empty

src/php/HAB/Pica/Reader/PicaXmlReader.php

src/php/HAB/Pica/Reader/Reader.php