integrated image and minor improvements

Example image encoded within html, no more external file required.
Added “no files selected” if no images are added.

index.html

@@ -117,7 +117,8 @@
 		}
 		#extra-settings-container {  }
 		#arduino-identifier, #adafruit-gfx-settings, #all-same-size { display: none; }
-		.error-msg { color: #ff0000; font-size: 1.2em; display: none; }
+		.msg { font-size: 1.2em; }
+		.error-msg { color: #ff0000; display: none; }
 	</style>
 </head>
 <body>
@@ -151,7 +152,8 @@
 						<div class="table-cell"><label>Canvas size/s: </label></div>
 						<div class="table-cell">
 							<ul id="image-size-settings"></ul>
-							<div id="only-images-file-error" class="error-msg">Only images file type are allowed</div>
+							<div id="only-images-file-error" class="msg error-msg">Only images file type are allowed</div>
+							<div id="no-file-selected" class="msg">No files selected</div>
 							<button id="all-same-size">all same size</button>
 						</div>				
 					</div>
@@ -279,7 +281,9 @@
 				<div class="note">
 					<i>If your image looks all messed up on your display, like the image below, try the other mode.</i>
 				</div>
-				<img class="inlineImg" src="img/error.jpg" width="150" height="64" alt="" />
+				<img class="inlineImg" 
+					src="data:image/jpeg;base64,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 truncated
+				width="150" height="64" alt="" />
 			</section>
 			<section class="sub-section">
 				<button type="button" class="generate-button" onclick="outputString()">Generate code</button>
@@ -334,6 +338,8 @@
 		var allSameSizeButton = document.getElementById('all-same-size');
 		// error message
 		var onlyImagesFileError = document.getElementById("only-images-file-error");
+		// initial message
+		var noFileSelected = document.getElementById("no-file-selected");
 
 		// The variable to hold our images. Global so we can easily reuse it when the
 		// user updates the settings (change canvas size, scale, invert, etc)
@@ -549,6 +555,10 @@
 			var files = evt.target.files;
 			onlyImagesFileError.style.display = "none";
 
+			files.length > 0 ? 
+				noFileSelected.style.display = "none" : 
+					noFileSelected.style.display = "block";
+
 			for (var i = 0, f; f = files[i]; i++) {
 
 				// Only process image files.
@@ -614,6 +624,7 @@
 								if(imageSizeSettings.children.length == 1) {
 									allSameSizeButton.style.display = "none";
 								}
+								if(images.length() == 0) noFileSelected.style.display = "block";
 								update();
 							};