Change v1.0.0-rc1 to v1.0.0.rc1

Fixes rubygems error:

    There was a ArgumentError while loading slave_pools.gemspec:
    Malformed version number string 1.0.0-rc1 from
      /Users/aaron/oss/slave_pools/slave_pools.gemspec:7:in `block in
    <main>'

(rubygems 2.0.14)
Add bootstrap rake task, sql script