Merge pull request #4 from andela-echigbo/master

Fix issue #3

Author: Gugic

lib/api-ai-ruby/request_query.rb

@@ -17,7 +17,7 @@ def initialize(client, options = {})
       options[:lang] = client.api_lang
       @options = options
       @headers = {
-          'Authorization': 'Bearer ' + client.client_access_token,
+          Authorization: 'Bearer ' + client.client_access_token,
       }
     end
 
@@ -56,4 +56,4 @@ def symbolize_keys!(object)
     end
 
   end
-end
+end