update generator to use use prefix for group

Author: Adam Bradley

builder/generate.py

@@ -57,7 +57,7 @@ def generate_scss(data):
 
   group = [ '.%s' % (data['name'].lower()) ]
   for ionicon in data['icons']:
-    group.append('.%s%s' % (css_prefix, ionicon['name']) )
+    group.append('.#{$ionicons-prefix}%s' % (ionicon['name']) )
 
   d.append( ',\n'.join(group) )
 

scss/_ionicons-icons.scss

@@ -890,4 +890,4 @@
 .#{$ionicons-prefix}wifi:before { content: $ionicon-var-wifi; }
 .#{$ionicons-prefix}wineglass:before { content: $ionicon-var-wineglass; }
 .#{$ionicons-prefix}woman:before { content: $ionicon-var-woman; }
-.#{$ionicons-prefix}wrench:before { content: $ionicon-var-wrench; }
+.#{$ionicons-prefix}wrench:before { content: $ionicon-var-wrench; }