Merge pull request #93 from ivanlanin/develop

Refactor and unit test PHPWord_Style_Font
PHPWord_Shared_Drawing::centimetersToPixels() conversion
Fix non-existing functions in Writer/ODText/Content.php
New function PHPWord_Style_Paragraph::setTabs() and unit test for PHPWord_Style_Paragraph
Reformat code samples on README.md to max 80 char per line
Fix parameter input for testWriteParagraphStyle_Pagination
Remove PHPWord_Style_Cell::setHeight() since it's irrelevant and never used. Should be in PHPWord_Style_Row
PHP method IS NOT case sensitive :)
PHPWord_Style_CellTest 100% code coverage
Change normal value for cell style tests
Basic README for `addText` and `createTextRun`