[sync master] 1.5

- 外部Chrome拡張との連携設定を追加

https://github.com/otiai10/kanColleWidget/wiki/%E5%A4%96%E9%83%A8Chrome%E6%8B%A1%E5%BC%B5%E9%80%A3%E6%90%BA%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6

![4e43e3f4](https://cloud.githubusercontent.com/assets/931554/4880700/2e98f20e-633f-11e4-891c-ac10ac7b8f65.gif)

![bujifve](https://cloud.githubusercontent.com/assets/931554/4880704/3465ab28-633f-11e4-81b0-0d7ae1e77fc1.gif)