Set ruby version to 2.2.3

[cmrd-senya]

The latest version bumps make bundle install fail with ruby versions less than 2.2.3.

I get the error message

Installing listen 3.1.3

Gem::InstallError: listen requires Ruby version >= 2.2.3, ~> 2.2

[jhass]

listen is a development dependency (through guard). Production installs should be unaffected as you can see by Travis still using Ruby 2.2.0.

[SuperTux88]

the latest version of rvm uses 2.2.4 if you only write 2.2, so maybe you simply need to run rvm get latest

[cmrd-senya]

I see. So it's rather my local installation issue then. I guess it could be closed then. Sorry for making noise.

[Flaburgan]

If you're using rbenv like me, you need to add the hotfix number manually in .ruby-version. But as we recommend using rvm at the moment, we should not modify it in diaspora code.

[Flaburgan]

Hm @cmrd-senya you raise a valid point here though, we say in the changelog that 2.1.x is still supported for diaspora* 0.6. So we can't bump listen this way. I just tested with ruby 2.1.5 and the error message is preatty clear: Gem::InstallError: listen requires Ruby version >= 2.2.3, ~> 2.2.

[SuperTux88]

2.1 is supported for prod-env, but not for development.

[Flaburgan]

Oh my bad I didn't read carefully enough @jhass's message.