Error when starting teamocil

[cb0]

I installed it as described (here)[https://github.com/remiprev/teamocil]

teamocil                                                                                                                                                                                                          :(
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': /var/lib/gems/1.9.1/gems/teamocil-1.0.1/lib/teamocil.rb:50: syntax error, unexpected tLABEL, expecting ')' (SyntaxError)
  def self.parse_options!(arguments: nil)
                                    ^
/var/lib/gems/1.9.1/gems/teamocil-1.0.1/lib/teamocil.rb:54: syntax error, unexpected keyword_end, expecting $end
        from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
        from /var/lib/gems/1.9.1/gems/teamocil-1.0.1/bin/teamocil:4:in `<top (required)>'
        from /usr/local/bin/teamocil:23:in `load'
        from /usr/local/bin/teamocil:23:in `<main>'

Every time I try to run it I get the error above. What am I doing wrong ? Anny suggestions ?
uname -a
Linux mybox 3.13.0-30-generic #55-Ubuntu SMP Fri Jul 4 21:40:53 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
Mybox is running Kubuntu
EDITOR=emacs

[remi]

Unfortunately, Teamocil 1.0 requires Ruby 2.0+. I suggest you install it with rbenv and ruby-build.

[cb0]

Thanks very much! I mustn't read the specs in detail :(