add support for AMD
Updated how to use with jquery ajax

ajaxStart and ajaxStop are global relative events.
http://api.jquery.com/Ajax_Events/
Removed redundant vendor specific rules
set border-radius to 50% instead of pixels so it won't matter how big it is
Added box-sizing: border-box to the icon and increased the size

The result is exactly the same as it was but now you can control the width/height of the icon without caring about the thickness of the borders
Merge pull request #27 from lipis/patch-3

Added box-sizing: border-box to the icon and increased the size
Merge pull request #24 from lipis/patch-2

Set border-radius to 50% instead of pixels so it won't matter how big is...
Merge pull request #21 from lipis/patch-1

Removed redundant vendor specific rules
Merge pull request #20 from bukhamseen/patch-1

Updated how to use with jquery ajax
Merge pull request #16 from rayqian/add-amd-support

Add support for AMD (#16, @rayqian)
Merge pull request #1 from rstacruz/master

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