No more develop branch

Author: PowerKiKi

README.md

@@ -139,5 +139,5 @@ More examples are provided in the [samples folder](samples/). You can also read
 
 We welcome everyone to contribute to PHPPresentation. Below are some of the things that you can do to contribute:
 
-- [Fork us](https://github.com/PHPOffice/PHPPresentation/fork) and [request a pull](https://github.com/PHPOffice/PHPPresentation/pulls) to the [develop](https://github.com/PHPOffice/PHPPresentation/tree/develop) branch
+- [Fork us](https://github.com/PHPOffice/PHPPresentation/fork) and [request a pull](https://github.com/PHPOffice/PHPPresentation/pulls) to the [master](https://github.com/PHPOffice/PHPPresentation) branch
 - Submit [bug reports or feature requests](https://github.com/PHPOffice/PHPPresentation/issues) to GitHub

docs/index.md

@@ -103,5 +103,5 @@ Below are the supported features for each file formats.
 
 We welcome everyone to contribute to PHPPresentation. Below are some of the things that you can do to contribute:
 
--  [Fork us](https://github.com/PHPOffice/PHPPresentation/fork) and [request a pull](https://github.com/PHPOffice/PHPPresentation/pulls) to the [develop](https://github.com/PHPOffice/PHPPresentation/tree/develop) branch
+-  [Fork us](https://github.com/PHPOffice/PHPPresentation/fork) and [request a pull](https://github.com/PHPOffice/PHPPresentation/pulls) to the [master](https://github.com/PHPOffice/PHPPresentation) branch
 -  Submit [bug reports or feature requests](https://github.com/PHPOffice/PHPPresentation/issues) to GitHub