Merge tag 'v1.0.0'

v1.0.0
Ignore .(git|npm)ignore when building packs
git: don't rely on git-symbolic-ref --short

This flag was added some time around git@1.7.10, which is newer than
what CentOS 6.5 provides.

Reported in strongloop/strongloop#173
Ensure default steps run when using --script only
v1.0.1
Merge branch 'release/1.0.1' into production