Push down require-css to its users

Eg. out of amber, add to helios and amber-attic.

bower.json

@@ -30,7 +30,8 @@
     "dependencies": {
         "amber": "^0.14.0",
         "jquery-ui": ">=1.9.2",
-        "codemirror": "^4.7.0"
+        "codemirror": "^4.7.0",
+        "require-css": "^0.1.2"
     },
     "devDependencies": {
         "amber-ide-starter-dialog": "^0.1.0",

require-css.amd.json

@@ -0,0 +1,10 @@
+{
+    "paths": {
+        "require-css": "."
+    },
+    "map": {
+        "*": {
+            "css": "require-css/css"
+        }
+    }
+}