Added a from_url helper method

Author: dmcnally

lib/pusher/client.rb

@@ -12,6 +12,10 @@ class Client
     # Loads the configuration from an url in the environment
     def self.from_env(key = 'PUSHER_URL')
       url = ENV[key] || raise(ConfigurationError, key)
+      from_url(url)
+    end
+
+    def self.from_url(url)
       client = new
       client.url = url
       client

spec/client_spec.rb

@@ -122,6 +122,18 @@
       end
     end
 
+    describe 'configuring from url' do
+      it "works" do
+        url = "http://somekey:somesecret@api.staging.pusherapp.com:8080/apps/87"
+
+        client = Pusher::Client.from_url(url)
+        expect(client.key).to eq("somekey")
+        expect(client.secret).to eq("somesecret")
+        expect(client.app_id).to eq("87")
+        expect(client.url.to_s).to eq("http://api.staging.pusherapp.com:8080/apps/87")
+      end
+    end
+
     describe 'when configured' do
       before :each do
         @client.app_id = '20'