Adding recognition of double quote (") as a valid quote delimiter
Renaming def to line up with SQL terminology.
Adding tests for double quoted identity delimiter
do not set default :port since it might be specified per (fail-over) host
[mysql] backported bulk change table support from Rails (fixes #469)
before AR 4.0 table.remove only accepted a single column name
minor README tweaks
Merge remote-tracking branch 'FairLoan/master'

* FairLoan/master:
  Adding tests for double quoted identity delimiter
  Renaming def to line up with SQL terminology.
  Adding recognition of double quote (") as a valid quote delimiter