Redmine

Having issues installing the following plugin
http://www.redmine.org/projects/redmine/wiki/PluginSchedules, I performed a git clone using "git clone git://github.com/bradbeattie/redmine-schedules-plugin.git" to the plugins, then renamed the folder and required.

I then performed the bundle install, which returned

"Warning: this Gemfile contains multiple primary sources. Using `source` more than once without a block is a security risk, and may result in installing unexpected gems. To resolve this warning, use a block to indicate which gems should come from the secondary source. To upgrade this warning to an error, run `bundle config disable_multisource true`.
Fetching https://github.com/alexdunae/holidays
Fetching gem metadata from https://rubygems.org/.........
Fetching version metadata from https://rubygems.org/...
Fetching dependency metadata from https://rubygems.org/..
Resolving dependencies....
"

"Bundle complete! 34 Gemfile dependencies, 58 gems now installed.
Gems in the groups development and test were not installed.
Use `bundle show [gemname]` to see where a bundled gem is installed."

I then performed a rake redmine:plugins:migrate RAILS_ENV=production

which returned

rake aborted!
LoadError: cannot load such file -- holidays/ca

I tried
gem install holidays
Fetching: holidays-4.5.0.gem (100%)
Successfully installed holidays-4.5.0
Parsing documentation for holidays-4.5.0
Installing ri documentation for holidays-4.5.0
1 gem installed

Any ideas?