Allow faraday 2.x

Fixes #37

Author: smortex

lib/orchestrator_client.rb

@@ -3,6 +3,7 @@
 require 'json'
 require 'openssl'
 require 'faraday'
+require 'faraday/net_http_persistent'
 
 class OrchestratorClient
   require 'orchestrator_client/error'

orchestrator_client.gemspec

@@ -15,6 +15,6 @@ Gem::Specification.new do |s|
   s.license       = "Apache-2.0"
   s.require_paths = ["lib"]
 
-  s.add_dependency 'faraday', '~> 1.4'
-  s.add_dependency 'net-http-persistent', '~> 4.0'
+  s.add_dependency 'faraday', '>= 1.4', '< 3.0'
+  s.add_dependency 'faraday-net_http_persistent', '>= 1.0', '< 3.0'
 end