[gemspec] cleanup dependencies

[mikz]

rack, cuba, celluloid, ... are pulled from airplay gem
no need to lock their versions here

fixes:

$ gem install airplayer
ERROR:  While executing gem ... (Gem::DependencyError)
    Unable to resolve dependencies: airplayer requires reel (= 0.4.0), reel-rack (= 0.1.0), celluloid (= 0.15.2); airplay requires celluloid (>= 0.17.0), reel (~> 0.5.0), reel-rack (~> 0.2.2); celluloid-io requires celluloid (>= 0.15.0)

[mikz]

Unfortunately it looks like with newer celluloid it can't find my apple tv.
But the airplay gem does not work either.

[tomohiro]

Thanks.

Unfortunately it looks like with newer celluloid it can't find my apple tv.

I've got the same error on my environment.

Your branch:

$ git checkout -b mikz-dependencies master
$ git pull https://github.com/mikz/airplayer.git dependencies
$ bundle
$ bundle exec airplayer devices  # Can't find Apple TV

airplay-cli:

$ gem install airplay-cli  # This installs `air` command
$ air list                          # Can't find Apple TV

So, I'm going to investigate what caused this...

[tomohiro]

I think airplay's dependencies are broken. Hence I'd like to locking version of dependencies for a while.

Thus this PR is closing for now.

[mikz]

@tomohiro then airplayer has to use gem to lock the correct versions before requiring them.
Because if there is no gem locking the version, it will just use the latest one installed, regardless what you have in the gemspec.