凉亭安装几个文件。为什么以及如何更改它？

I am using bower to install dependencies for my project(I know there is yeoman but I am using bower). After setting up component.json file, when I do bower install it installs dependencies to correct directory but it install lots of other unnecessary files with it too. Now I want bower to install the specific file which is needed for example I am using bower to install dependencies for my