Add loading Image
Prevent Double Click
Update Library
Display register data
Use wp_localize_script() for JS data
U2F API Demo
Decode String->JSON
Consider Subdomain Install
Register with Ajax
Add server-side register action
Use real Data for list
Enable remove action
Hide Deleted Keys
Apply Coding Style to CSS
Button Design for mobile
Separete Add Security Key Function
Show 'Please wait' while registering
Update Button text when Ajax has finished
Show detailed info about Ajax error
Add .travis.yml