Settings popup to turn the extension on/off and to modify intercepted URLs

closes #2

used Ionic+AngularJS and jQuery for the UI
used Bower to manage dependencies
made small grammar fix in manifest.json
used Chrome storage instead of localStorage

Signed-off-by: Mohamad Ahmadi <mohamadhasan.ahmadi@gmail.com>
Sets Access-Control-Expose-Headers response header in the settings popup

closes #15

Signed-off-by: Mohamad Ahmadi <mohamadhasan.ahmadi@gmail.com>
Merge pull request #10 from mhahmadi/moe_settings_pop

Settings popup to turn the extension on/off and to modify intercepted URLs
Added support for Access-Control-Allow-Methods and tidied slightly.