Refactor snippet to create new collumn in a migration(mccc -> mnc)
Remove empty column in mct snippet
Refactor old migration creation snippet and an alternative one
document how version differences could be coped with
what about libraries? postfixes may do it
Add ruby snippet btp for polymorphic belongs_to
Add let! and remove brackets from let.

The user must choose which block syntax to be used.
Merge branch 'master' of https://github.com/huxuan/vim-snippets