lakedrops/theme-d8-sass#5 Update bower asset definition

composer.json

@@ -193,10 +193,22 @@
           }
         },
         "sass": {
-          "bootstrap-sass": "assets/stylesheets",
-          "flat-ui-sass": "vendor/assets/stylesheets",
-          "fontawesome": "scss",
-          "animate-sass": ""
+          "bootstrap-sass": {
+            "src": "assets/stylesheets",
+            "import": ["bootstrap", "overrides"]
+          },
+          "flat-ui-sass": {
+            "src": "vendor/assets/stylesheets",
+            "import": ["flat-ui/variables", "flat-ui"]
+          },
+          "fontawesome": {
+            "src": "scss",
+            "import": ["font-awesome"]
+          },
+          "animate-sass": {
+            "src": "",
+            "import": ["animate"]
+          }
         }
       }
     },