Update homepage and documentation URL

Author: aurelienshz

pinetwork.gemspec

@@ -1,13 +1,16 @@
 Gem::Specification.new do |s|
   s.name        = "pinetwork"
-  s.version     = "0.1.0"
+  s.version     = "0.1.1"
   s.summary     = "Pi Network Ruby"
   s.description = "Pi Network backend library for Ruby-based webservers."
   s.authors     = ["Pi Core Team"]
   s.email       = "support@minepi.com"
   s.files       = ["lib/pi_network.rb"]
-  s.homepage    = "https://rubygems.org/gems/pi_network"
+  s.homepage    = "https://github.com/pi-apps/pi-ruby"
   s.license     = "PiOS"
   s.add_runtime_dependency "stellar-sdk", "~> 0.29.0"
   s.add_runtime_dependency "faraday", "~> 0"
+  s.metadata = {
+    "documentation_uri" => "https://github.com/pi-apps/pi-ruby",
+  }
 end