A Chrome plugin that will show Jira metadata when hovering over a Jira issue key on github.
Now available trough the Chrome Store !
https://chrome.google.com/webstore/detail/jira-hotlinker/lbifpcpomdegljfpfhgfcjdabbeallhk
Make sure to configure your Jira instance url in the options page after installing. You can find the settings by clicking on the extensions icon and selecting options !
The tooltip is enabled on github.com by default, you can add new domains by clicking on the extension icon or in the option menu.