Merge pull request #218 from PHPOffice/develop

PR Version 0.10
0.10 release date: 4 May 2014
Enable code coverage in Scrutinizer
Update composer requirements for php-zip

With PCLZip support added php-zip isn't a requirement any more.
Update changelog
Merge pull request #247 from ivanlanin/master

PR 0.10.1
Additional writer test
Merge branch 'master' into develop
Add two recipes
Merge remote-tracking branch 'upstream/master' into develop
QA: Misc. bugfixes and docblock improvements