Add installing bundler for rvmsudo
Add installing bundler for rvmsudo

wabcwang/nise_bosh,kaerlong/nise_bosh,kaerlong/nise_bosh,nttlabs/nise_bosh,wabcwang/nise_bosh,wabcwang/nise_bosh,kaerlong/nise_bosh,nttlabs/nise_bosh,nttlabs/nise_bosh