Include SCSS in npm install

[yeojz]

It would be good to also include the SCSS file when we do npm install react-mfb.
This would allow us to do an @import in our own application scss, and at the same time tweak the variables.

[phated]

Published as 0.2.1

[vanoode]

@phated mfb.scss try to:

@import "_/_slidein"; @import "_/_slidein-spring"; @import "_/_zoomin"; @import "_/_fountain";

But its not present in package.

[rzymek]

Continued in issue #31 and pull request #32