a little info about the difference betweek 0.9 and 0.12
Merge pull request #386 from SvenDowideit/hints-to-add-userdata.tar

a little info about the difference between 0.9 and 0.12
make pointer to installation docs a little more obvious
Merge pull request #387 from SvenDowideit/point-to-common-docs

make pointer to installation docs a little more obvious
1.0.0 release BOOM
Merge pull request #388 from SvenDowideit/pre-1.0.0

1.0.0 release BOOM
Support NFS back

https://github.com/boot2docker/boot2docker/pull/337
Do not delete sunrpc
Add CONFIG_NFS_V4_1 and CONFIG_NFSD_TCP
Change m to y for CONFIG_NFSD