all demos added because exec() don't need main form to exit_all

.travis.yml

@@ -86,7 +86,7 @@ script:
   - ./animate-bmp
   - ./audio_player
   - ./background-effects
-  #- ./calculator ?
+  - ./calculator 
   - ./categ
   - ./clicked
   - ./decore
@@ -94,18 +94,45 @@ script:
   - ./drag-button
   - ./draw
   - ./file_explorer
-  #- ./example_menu
+  - ./example_menu
   - ./example_listbox
-  #- ./example_combox
+  - ./example_combox
   - ./example.button
+  - ./folder_tree_nana
+  - ./folder_tree_std
+  - ./framework_design_1
+  - ./framework_design_2
+  - ./framework_design_3
+  - ./group
   - ./HelloWord
-  #- ./MontiHall
-  #- ./helloworld_demo 
-  #- ./notepad 
-  #- ./loader_2
-  #- ./widget_show2
-  #- ./widget_show
-  
-  
+  - ./helloword_quit
+  - ./inputbox  
+  - ./label_listener  
+  - ./lambda_event.cpp11  
+  - ./listbox_inline_widget  
+  - ./listbox_Resolver  
+  - ./loader_1  
+  - ./loader_2  
+  - ./mbox  
+  - ./menu_debug  
+  - ./MontiHall
+  - ./helloworld_demo 
+  - ./notepad 
+  - ./loader_2
+  - ./mbox  
+  - ./menu_debug  
+  - ./menu_popuper  
+  - ./modal_form   
+  - ./widget_show2
+  - ./widget_show
+  - ./place_login  
+  - ./png  
+  - ./screen  
+  - ./stretch_image  
+  - ./threading  
+  - ./thread-pool  
+  - ./various_events  
+  - ./window-dragger
+  - ./windows-subclassing