log messages for sinatra and rack

Rakefile

@@ -124,7 +124,8 @@ LOCAL_GEMS =
     ['sham_rack', nil],
     ['capistrano', nil],
     ['sqlite3-ruby', nil],
-    ["therubyracer",nil]
+    ["therubyracer",nil],
+    ["sinatra",nil]
   ]
 
 

lib/airbrake.rb

@@ -18,7 +18,6 @@
 
 require 'airbrake/railtie' if defined?(Rails::Railtie)
 
-# Gem for applications to automatically post errors to the Airbrake of their choice.
 module Airbrake
   API_VERSION = "2.2"
   LOG_PREFIX = "** [Airbrake] "
@@ -55,8 +54,8 @@ def report_response_body(response)
     # Returns the Ruby version, Rails version, and current Rails environment
     def environment_info
       info = "[Ruby: #{RUBY_VERSION}]"
-      info << " [#{configuration.framework}]"
-      info << " [Env: #{configuration.environment_name}]"
+      info << " [#{configuration.framework}]" if configuration.framework
+      info << " [Env: #{configuration.environment_name}]" if configuration.environment_name
     end
 
     # Writes out the given message to the #logger

lib/airbrake/configuration.rb

@@ -228,6 +228,9 @@ def port
       @port || default_port
     end
 
+    # Determines whether protocol should be "http" or "https".
+    # @return [String] Returns +"http"+ if you've set secure to +false+ in
+    # configuration, and +"https"+ otherwise.
     def protocol
       if secure?
         'https'
@@ -248,7 +251,7 @@ def environment_filters
       warn 'config.environment_filters has been deprecated and has no effect.'
       []
     end
-    
+
     def ca_bundle_path
       if use_system_ssl_cert_chain? && File.exist?(OpenSSL::X509::DEFAULT_CERT_FILE)
         OpenSSL::X509::DEFAULT_CERT_FILE
@@ -262,6 +265,9 @@ def local_cert_path
     end
 
   private
+    # Determines what port should we use for sending notices.
+    # @return [Fixnum] Returns 443 if you've set secure to true in your
+    # configuration, and 80 otherwise.
     def default_port
       if secure?
         443

lib/airbrake/rack.rb

@@ -22,6 +22,7 @@ module Airbrake
   class Rack
     def initialize(app)
       @app = app
+      Airbrake.configuration.logger ||= Logger.new STDOUT
     end
 
     def call(env)