rename scss extensions dir to modes

ionic/components/item/item.scss

@@ -1,7 +1,7 @@
 
 // Item
 // --------------------------------------------------
-// Core structure only, dimensions belong in platform specific extensions
+// Core structure only, dimensions belong in specific modes
 
 
 .item {

ionic/ionic.ios.scss

@@ -1,17 +1,17 @@
 
 // iOS Components
 @import
-  "components/item/extensions/ios",
-  "components/toolbar/extensions/ios",
-  "components/action-menu/extensions/ios",
-  "components/card/extensions/ios",
-  "components/checkbox/extensions/ios",
-  "components/content/extensions/ios",
-  "components/list/extensions/ios",
-  "components/nav-bar/extensions/ios",
-  "components/popup/extensions/ios",
-  "components/radio/extensions/ios",
-  "components/search-bar/extensions/ios",
-  "components/segment/extensions/ios",
-  "components/switch/extensions/ios",
-  "components/tabs/extensions/ios";
+  "components/item/modes/ios",
+  "components/toolbar/modes/ios",
+  "components/action-menu/modes/ios",
+  "components/card/modes/ios",
+  "components/checkbox/modes/ios",
+  "components/content/modes/ios",
+  "components/list/modes/ios",
+  "components/nav-bar/modes/ios",
+  "components/popup/modes/ios",
+  "components/radio/modes/ios",
+  "components/search-bar/modes/ios",
+  "components/segment/modes/ios",
+  "components/switch/modes/ios",
+  "components/tabs/modes/ios";

ionic/ionic.material.scss

@@ -3,14 +3,14 @@
 @import
   "components/material/variables",
   "components/material/ripple",
-  "components/toolbar/extensions/material",
-  "components/app/extensions/material",
-  "components/action-menu/extensions/material",
-  "components/button/extensions/material",
-  "components/card/extensions/material",
-  "components/checkbox/extensions/material",
-  "components/item/extensions/material",
-  "components/list/extensions/material",
-  "components/nav-bar/extensions/material",
-  "components/tabs/extensions/material";
+  "components/toolbar/modes/material",
+  "components/app/modes/material",
+  "components/action-menu/modes/material",
+  "components/button/modes/material",
+  "components/card/modes/material",
+  "components/checkbox/modes/material",
+  "components/item/modes/material",
+  "components/list/modes/material",
+  "components/nav-bar/modes/material",
+  "components/tabs/modes/material";