Added addCheckBox() function

Created new file named CheckBox.php under Section folder. Added
addCheckBox() function to Section.php and \Table\Cell.php files and
_writeCheckbox(..) function to Base.php file.
Font-style addition: bgColor

Signed-off-by: Julien Carignan <julien.carignan@hotmail.com>
Added height rules for table row
- mostly for removing the added space after a table
- Code mostly come from this discussion: https://phpword.codeplex.com/discussions/440933
- Usage: $table->addRow(5000, $rowStyle, "exact");

Signed-off-by: Julien Carignan <julien.carignan@hotmail.com>
"php://output" content-length + tmpfile location
- added content-length header to know the total file size during the download
- Tmp file should go into sys_get_temp_dir() instead of "./"

Signed-off-by: Julien Carignan <julien.carignan@hotmail.com>
added samples for bgColor and tableRowHeightRules

Signed-off-by: Julien Carignan <julien.carignan@hotmail.com>
Test folder updated

Test folder updated for new file CheckBoxText
table row height rule moved to rowStyle (ivanlanin)
new usage: $table->addRow($height, array("heightRule"=>"exact"));

Signed-off-by: Julien Carignan <julien.carignan@hotmail.com>
reverted table/row

Signed-off-by: Julien Carignan <julien.carignan@hotmail.com>
empty space remove
Bugfix for footnote reference number and additional feature to insert text break and style the reference number
changed heightRule string to exactHeight bool
Writer unit test enhancements
#168 Merge branch 'develop' of https://github.com/jcarignan/PHPWord
- Comment header('Content-Length:'): HTTP header should not be in class that can be called via CLI
- Incorporate temporary location to ODT and RTF
- Update documentation
- Add unit tests
Fix deprecated method, unused parts, initial definition, and @method annotation
#156 Merge branch 'master' of https://github.com/ozilion/PHPWord
#156 Merge branch 'master' of https://github.com/ozilion/PHPWord
#156 Merge branch 'master' of https://github.com/ozilion/PHPWord
Unit test enhancements
Docblock updates
Refactor writers and readers
- Create Writer abstract class
- Inherit writers class from Writer
- Inherit ODText\WriterPart from Word2007\WriterPart
- Rename AbstractReader > Reader