fixed bug about multibyte characters in the URL

do not work app when URL includes multibyte chars.

#### Before
![](http://i.gyazo.com/08b086db79baf9e7c964828fe97aa414.png)

#### After
![](http://i.gyazo.com/c023961bf9f5e88c064cdfe6e24a84a4.png)


### My Environment
* OSX 10.9.5