Two versions of styled-components installed

[jonsnielsen]

Hey, awesome project and really love the spinners!
Since I'm using styled-components on my project I get an error becuase react-spinners-kit ships it's own version of styled-components. Resulting in having two different versions of styled components installed.
To resolve this the following packages need to be moved from dependencies to both peerDependencies and devDependencies:

prop-types,
react,
react-dom,
styled-components