added capitalize extension

lib/entities/PizzaRecipe/Ingredient.dart

@@ -12,7 +12,7 @@ class Ingredient {
   Widget getIngredientWidget(int weight){
     return Row(
       children: <Widget>[
-        Text("${this.name}: "),
+        Text("${this.name.capitalize()}: "),
         Text("${this.getAbsolute(weight)}$unit")
       ],
     );

lib/util.dart

@@ -19,4 +19,10 @@ Future<List<PizzaRecipe>> getRecipes() async {
 
 Future<String> loadAsset(String path) async {
   return await rootBundle.loadString(path);
+}
+
+extension StringExtensions on String {
+  String capitalize() {
+    return this[0].toUpperCase() + this.substring(1);
+  }
 }