Initial docs assets
Renamed assets, added in placeholders for docs
Testing images
Updated NPM commands and README documentation

Provided clearer instructions and more consistent commands for NPM
scripts.
Updated README extension links
Fill in inline documentation with JSDoc
Initial stab at overview documentation
More specific documentation on background, content, and activity
Added in webdriver reference
Merge pull request #26 from tbranyen/docs

Initial documentation structure
Display proper time when notification will happen
Ensure that pages are only rendered once

Prior to this commit pages were rendered all immediately at runtime.
This caused some odd behavior with logging and debugging, as it appeared
that multiple re-renders were happening.  This also caused some
unnecessary performance strain on startup.
Implemented Chrome extension notifications
Finish up notifications
Merge pull request #27 from tbranyen/notifications

Notifications
Removes all providers and OAuth

We've decided to take the extension in a different direction.  Instead
of leveraging OAuth to make transactions in the client, we'll utilize
payment provider buttons, which will handle payments without linking to
a provider.
Upgraded NPM dependencies
Disable user selection of the navigation
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