added min req. ruby version

README.md

@@ -8,6 +8,9 @@
  * Takes in one argument - ```country code```. Country can be an ISO3361-1_alpha-2 or ISO3361-1_numeric code.
  * Authentication is not required. Rate limit is the same as it is mentioned in  [Emergency Number API docs](http://emergencynumberapi.com/docs#rate-limiting).
 
+## Requirements
+* Ruby 2.0.0 or higher
+
 ## Installation
 
 Add this line to your application's Gemfile:

emergency_number.gemspec

@@ -13,6 +13,7 @@ Gem::Specification.new do |spec|
   spec.description   = 'Based on Emergency Number API. This ruby gem allows you to query the API and get any emergency numbers for any country in the world.'
   spec.homepage      = 'https://github.com/shayonj/emergency_number'
   spec.files         = Dir['{lib/**/*,spec/**/*,MIT-LICENSE,README.md,Gemfile}']
+  spec.required_ruby_version     = '>= 2.0.0'
   spec.platform      = Gem::Platform::RUBY
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']

lib/emergency_number/version.rb

@@ -1,4 +1,4 @@
 module EmergencyNumber
   # Final versioning for the gem.
-  VERSION = '0.3.1'.freeze
+  VERSION = '0.3.2'.freeze
 end