make checkbox animate quickly when not hover.

it's not a perfect method. need improve.
by the way. add 'Thumbs.db' and '.DS_Store' to .gitignore.

.gitignore

@@ -1,3 +1,6 @@
 # https://git-scm.com/docs/gitignore
 # https://help.github.com/articles/ignoring-files
-# Example .gitignore files: https://github.com/github/gitignore
+# Example .gitignore files: https://github.com/github/gitignore
+
+Thumbs.db
+.DS_Store

less/checkboxes.less

@@ -66,10 +66,17 @@
 
     // Ripple effect on click
     input[type=checkbox]:not(:checked) ~ .check:after {
-        .animation(rippleOff 500ms);
+        .animation(rippleOff 500ms linear forwards);
     }
     input[type=checkbox]:checked ~ .check:after {
-        .animation(rippleOn 500ms);
+        .animation(rippleOn 500ms linear forwards);
+    }
+
+    // Make animate quickly when not hover
+    &:not(:hover) input[type=checkbox] ~ .check {
+         &:before, &:after {
+             .animation-duration(1ms);
+         }
     }
 
     // Style for disabled inputs

less/prefixer.less

@@ -98,6 +98,7 @@
     -moz-animation-duration: @duration;
     -ms-animation-duration: @duration;
     -o-animation-duration: @duration;
+    animation-duration: @duration;
 }
 .animation-fill-mode(@mode) {
     -webkit-animation-fill-mode: @mode;