update ui;

add open and close button to ui;
close intro when new image is uploaded;

scripts/main.js

@@ -51,6 +51,7 @@ require(
 					'set-new-src'              : new Signal(),
 					'control-set'              : new Signal(),
 					'control-updated'          : new Signal(),
+					'close-intro'              : new Signal(),
 					'image-data-url-requested' : new Signal()
 				}
 			};

scripts/src/dragdrop.js

@@ -34,6 +34,7 @@ define(
 			)
 			{
 				signals['load-file'].dispatch( event.dataTransfer.files[0] );
+				signals['close-intro'].dispatch();
 			}
 		}
 

scripts/src/import-button.js

@@ -50,6 +50,7 @@ define(
 			)
 			{
 				signals['load-file'].dispatch( event.target.files[0] );
+				signals['close-intro'].dispatch();
 			}
 		}
 

scripts/src/intro.js

@@ -13,6 +13,7 @@ define(
 			signals = shared.signals;
 			button.addEventListener( 'click', buttonClicked );
 			close_button.addEventListener( 'click', close );
+			signals['close-intro'].add( close );
 		}
 
 		function buttonClicked( event )