multiple rake tasks fails because "shared" repo is considered to be a gem about rainforest

[AliSoftware]

Seems to have a similar issue with rake bootstrap failing with the shared repo because it is expecting to have a gemspec.

Bootstrapping shared/
rake aborted!
Unable to determine name from existing gemspec. Use :name => 'gemname' in #install_tasks to manually set it.

[AliSoftware]

As shared is not a gem, we should definitely remove shared from the GEM_REPOS array.

But then should we add it in another array of the Rakefile like DEFAULT_REPOS, so that it is cloned anyway? (not sure to master all the implications as the Rainforest's Rakefile is rather large)

[AliSoftware]

fixed by #19