Fixed few examples to work and added some warning strings on apps which...

Fixed few examples to work and added some warning strings on apps which doesn't work unless you have a explicit gem installed.

examples/RAA.rb

-require 'soap/rpc/driver'
-require 'iRAA'
+begin
+  require 'soap/rpc/driver'
+  require 'iRAA'
+rescue LoadError
+  warn("Sorry, at the moment this example is not working.")
+  sleep(5)
+  exit(false)
+end
 
 module RAA
   extend SOAP

examples/babelfish.rb

 #!/usr/bin/env ruby
 
 require 'fox16'
-require 'tranexp'
+
+begin
+  require 'tranexp'
+rescue LoadError
+  warn("LoadError: To execute this app you need to have 'tranexp' gem installed.")
+  sleep(5)
+  exit(false)
+end
 
 include Fox
 

examples/canvasdemo.rb

@@ -10,7 +10,7 @@ class CanvasDemo < FXMainWindow
     super(app, "Canvas Demo", nil, nil, DECOR_ALL, 0, 0, 800, 600)
 
     # Menu bar
-    menu_bar = FXMenubar.new(self, LAYOUT_SIDE_TOP|LAYOUT_FILL_X)
+    menu_bar = FXMenuBar.new(self, LAYOUT_SIDE_TOP|LAYOUT_FILL_X)
 
     # File menu
     file_menu = FXMenuPane.new(self)
@@ -53,7 +53,7 @@ class CanvasDemo < FXMainWindow
     FXMenuTitle.new(menu_bar, "&Help", nil, help_menu)
 
     # Status bar
-    FXStatusbar.new(self,
+    FXStatusBar.new(self,
       LAYOUT_SIDE_BOTTOM|LAYOUT_FILL_X|STATUSBAR_WITH_DRAGCORNER)
 
     # Shapes canvas fills the remainder

examples/charts.rb

 require 'fox16'
-require 'google_chart'
-require 'open-uri'
+
+begin
+  require 'google_chart'
+  require 'open-uri'
+rescue LoadError
+  warn("LoadError: To execute this app you need to have 'google_chart' gem installed.")
+  sleep(5)
+  exit(false)
+end
 
 include Fox
 

examples/iRAA.rb

-require 'soap/mapping'
+begin
+  require 'soap/mapping'
+rescue LoadError
+  warn("Sorry, at the moment this example is not working.")
+  sleep(5)
+  exit(false)
+end
 
 
 module RAA; extend SOAP

examples/raabrowser.rb

 require 'fox16'
-require 'cgi'
-require 'soap/wsdlDriver'
+begin
+  require 'cgi'
+  require 'soap/wsdlDriver'
+rescue LoadError
+  warn("Sorry, at the moment this example is not working.")
+  sleep(5)
+  exit(false)
+end
 
 include Fox
 

examples/rmagick.rb

 require 'fox16'
-require 'RMagick'
+begin
+  require 'RMagick'
+rescue LoadError
+  warn("LoadError: To execute this app you need to have 'RMagick' gem installed.")
+  sleep(5)
+  exit(false)
+end
 
 include Fox