Awesome

Chrome Extension Reloader

This extension allows users of Google Chrome to reload an extension with a single click on a button.
At the options page, a simple yet effective interface provides a quick way to change the "active extension" (the extension which is reloaded upon click of the browser action button).

The button can also be clicked using Ctrl + Shift + E (to change this, go to chrome://extensions/, and click on "Keyboard Shortcuts")

To use the extension after cloning the repository, follow the following steps:

1. Visit chrome://extensions/
2. Enable Developer mode.
3. Click on Load unpackedextension`
4. Select the Chrome-Extension-Reloader subdirectory (containing the manifest.json).

Published at Stack overflow: How do I auto-reload a Chrome extension I'm developing?