Support only recent rubies

.travis.yml

@@ -1,15 +1,13 @@
 language: ruby
 sudo: false
 rvm:
-  - 1.9.3
-  - 2.0.0
-  - 2.1.0
-  - jruby
+  - 2.2.0
+  - 2.3.0
+  - jruby-9.0.4.0
   - rbx-2.1.1
   - ruby-head
 matrix:
   allow_failures:
     - rvm: ruby-head
-    - rvm: rbx-2.1.1
 notifications:
   irc: "irc.freenode.org#adhearsion"

CHANGELOG.md

@@ -1,4 +1,5 @@
 # [develop](https://github.com/adhearsion/ruby_ami)
+  * Breaking change: Ruby 1.9 is no longer supported. Minimum supported versions are Ruby 2.2.0 and JRuby 9.0.0.0
   * Breaking change: Removed the deprecated `RubyAMI::Client` because it is no longer relevant.
   * Breaking change: Start the connection when the `RubyAMI::Stream` starts, permitting supervised restart of the stream on connection failure. To support this, the event callback now passes a second parameter which is the stream itself.
 

ruby_ami.gemspec

@@ -13,6 +13,8 @@ Gem::Specification.new do |s|
 
   s.rubyforge_project = "ruby_ami"
 
+  s.required_ruby_version = '>= 2.2.0'
+
   s.files         = `git ls-files`.split("\n") << 'lib/ruby_ami/lexer.rb'
   s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
   s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }