Do not use demo key by default

Author: laurynas

lib/detect_language/configuration.rb

@@ -41,7 +41,7 @@ class Configuration
     alias_method :secure?, :secure
 
     def initialize
-      @api_key            = "demo"
+      @api_key            = nil
       @api_version        = "0.2"
       @host               = "ws.detectlanguage.com"
       @user_agent         = "Detect Language API ruby gem"

lib/detect_language/version.rb

@@ -1,3 +1,3 @@
 module DetectLanguage
-  VERSION = "1.0.0"
+  VERSION = "1.0.1"
 end

spec/detect_language_spec.rb

@@ -6,7 +6,7 @@
 
   context "configuration" do
     it "should have default configuration values" do
-      subject.configuration.api_key.should      == 'demo'
+      subject.configuration.api_key.should      be_nil
       subject.configuration.api_version.should  == '0.2'
       subject.configuration.host.should         == 'ws.detectlanguage.com'
       subject.configuration.user_agent.should   == 'Detect Language API ruby gem'