Added .nvrmc file
Added .nvrmc file

An .nvmrc file standardises the version of node (and therefore npm) that
the project will use. For those that use nvm, this will mean that nvm
a) won't forget what version of node to use when you switch branched
b) you can just type `nvm install` to install the correct version of
node

rightscale/design-kit,rightscale/design-kit,rightscale/design-kit,rightscale/design-kit