Update homepage url in gemspec
Fix rubygems source warnings
Update travis-ci links
Add ruby-version and ruby-gemset to gitignore
Add conditional migrations via filter.

This is part 1 of the WIP - the triggers still copy all new data and
updated data.
Not using conditional triggers with joins
Dont require arel
Change back the spec database params
Don't alias the change_table method
Have attribute reader, no need for method
Add rdoc to migrator for filter
Update readme
Remove old describe block
Bump version to 2.0.0 due to API change
Test against MRI 2.0.0 instead of 1.8.7

1.8.7 reached its End Of Life recently.
Correctly specify allow_failures
Mention MRI 2.0.0 issues in README
fixing setup-cluster script for when there is multiple mysql_install_db
Merge pull request #45 from arthurnn/fix_spec_script

fixing setup-cluster script for when there is multiple mysql_install_db
Adding the ability to rename columns

...And keep the data in them.
Use the adapter to quote the value.