1.0.x - fix iOS-touch-bug

[zonky2]

add role="button" at toggler to fix touch support

-  <div class="panel-heading <?php echo $this->toggler; ?>"<?php if ($this->headlineStyle): ?> style="<?php echo $this->headlineStyle; ?>"<?php endif; ?> data-toggle="collapse"<?php if($group): ?> data-parent="#<?php echo $group; ?>"<?php endif; ?> data-target="#accordion-<?php echo $this->id; ?>">
+  <div class="panel-heading <?php echo $this->toggler; ?>"<?php if ($this->headlineStyle): ?> style="<?php echo $this->headlineStyle; ?>"<?php endif; ?> data-toggle="collapse"<?php if($group): ?> data-parent="#<?php echo $group; ?>"<?php endif; ?> data-target="#accordion-<?php echo $this->id; ?>" role="button">

see ember-bootstrap/ember-bootstrap#355 (comment)

[dmolineus]

According to ember-bootstrap/ember-bootstrap#355 (comment) it's the wron solution as the role of the panel-heading should be role="tab" which is added by 75608d7.

You'd should use the css solution suggested in your link.

[zonky2]

maybe we add at readme "known issues" with this tip to change the CSS