Preserve new line symbols in short description

Preserve new line symbols in short description, but remove any leading whitespaces from each line.
minor #103 Preserve new line symbols in short description (aik099)

This PR was merged into the 2.0-dev branch.

Discussion
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Preserve new line symbols in short description

Preserve new line symbols in short description, but remove any leading whitespaces from each line.

This change one of the change set to bring used DocBlock parser in sync with https://github.com/phpDocumentor/ReflectionDocBlock .

Closes to #102

Commits
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1701d5d Preserve new line symbols in short description