Update README.md
Cosmetic changes to options&popup
Fixes & Stylings by @cgardner

Fixes issue #26 as well as providing CSS for options.html & popup.html

Great work @cgardner!
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Changed "Always On" button value
Changed number input width
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Removed a temp debugging line
Added extra devider
Reorganised and fixed HabitRPG Bug
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Changed UID/API alert to Notification();
Update README.md
Added UI elements

Added an about section, a changelog section & added tooltips.
Changed title of task & edited About section

Changed HabitRPG habit title to "Browsing Productivity"
Fixed WorkStatus in popup
Fixed Typo & invalid manifest
Merge remote-tracking branch 'upstream/master'
Updated to use cloud storage for API token and UID