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
Replace resource intensive check for empty text property.
Merge pull request #973 from Zen-CODE/Doc_English_Improvements_2

Small corrections and improvements to the documentaion
Merge pull request #966 from Ian-Foote/placeholder

Placeholder
Small English and grammar corrections to the docs