Add placeholder StringProperty to TextInput widget.
Merge branch 'master' into placeholder
Add basic placeholder functionality.
Add placeholder_color ListProperty.
Refresh placeholder text on widget size change.
Edit TextInput style to respect placeholder_color.

Use a lighter grey for default placeholder_color.
Make placeholder text respect font_name and font_size.
Rename 'placeholder' -> 'hint_text'.
Show hint_text when password=True.
Add hint check to codeinput's _create_line_label.
progressbar: fix value < 0 or higher than max. closes #941
Merge branch 'master' of ssh://github.com/kivy/kivy
Add version added to hint_text and hint_text_color properties.
fix error in doc (thanks gizpo)
tuio: add an usage example within the App
Merge branch 'master' of ssh://github.com/kivy/kivy
Small fixes and improvements to the English documentation
Merge pull request #969 from Zen-CODE/Doc_English_Improvements_1

Small fixes and improvements to the English documentation
Correct versionchanged to versionadded.
Small corrections and improvements to the documentaion