Fixes source formatting.
Removes the use of and corrects documentation for, returning FALSE when an Exception is thrown. The return won't execute if the exception is thrown.
Merge pull request #3 from wjnerdery/patch-2

Fixes source formatting & removes return FALSE on exceptions.
Tab -> 4 Spaces
Define enum codes for Exception
XML writer assign document properties by looping through the $doc_prop array
Add FileTypeNotSupported exception code
Change constants to ALL_CAPS
Added composer.json
Begin using PHP namespace
Re-standardize name of classes
Delete old classes no longer used
Fix namespace & autoload
Set default value for  param into NULL
Added support for TSV spreadsheet document
Change setDelimiter access in CSVParser into public
Sanitize value inside XML cells from special HTML chars
Change package name to lowercase
Change package name
Fix JSON parse error
Add some methods to check availability of data after parsing