Modifed README file on how to install package.
Modifed README file on how to install package.

WingGao/bson,hildjj/bson,stevei101/bson,eklitzke/bson,cupcicm/bson,martinkou/bson,jpaalasm/bson,jbenet/bson,jchia/bson,msabramo/bson,mnuhn/bson,hisery/bson,andreas/bson,ciappi/Yaranullin,daleobrien/bson