Update dep to Nan 2.x.
Update dep to Nan 2.x.

baudehlo/node-fs-ext,CasperTech/node-fs-ext,baudehlo/node-fs-ext,pmurias/node-fs-ext,CasperTech/node-fs-ext,pmurias/node-fs-ext,ggreer/node-fs-ext,pmurias/node-fs-ext,ggreer/node-fs-ext,CasperTech/node-fs-ext,baudehlo/node-fs-ext,ggreer/node-fs-ext,CasperTech/node-fs-ext,pmurias/node-fs-ext,ggreer/node-fs-ext