README.md
##<paper-radio-group>
Material design: Radio button
paper-radio-group allows user to select at most one radio button from a set.
Checking one radio button that belongs to a radio group unchecks any
previously checked radio button within the same group. Use
selected to get or set the selected radio button.
The inside the group must have the name attribute
set.
Example:
<paper-radio-group selected="small">
<paper-radio-button name="small">Small</paper-radio-button>
<paper-radio-button name="medium">Medium</paper-radio-button>
<paper-radio-button name="large">Large</paper-radio-button>
</paper-radio-group>
Radio-button-groups can be made optional, and allow zero buttons to be selected:
<paper-radio-group selected="small" allow-empty-selection>
<paper-radio-button name="small">Small</paper-radio-button>
<paper-radio-button name="medium">Medium</paper-radio-button>
<paper-radio-button name="large">Large</paper-radio-button>
</paper-radio-group>
See paper-radio-button for more
information about paper-radio-button.