Merge pull request #217 from vhiairrassary/vhiairrassary/sri-attributes

Add attributes needed for SRI

Author: lihaoyi

scalatags/src/scalatags/generic/Attrs.scala

@@ -1002,6 +1002,19 @@ trait Attrs[Builder, Output <: FragT, FragT] extends InputAttrs[Builder, Output,
     */
   lazy val defer = attr("defer").empty
 
+  /**
+   * This attribute specifies an expected hash for a resource.
+   *
+   * MDN
+   */
+  lazy val integrity = attr("integrity")
+  /**
+   * Indicates if the fetching of the resource must be done using a CORS request.
+   *
+   * MDN
+   */
+  lazy val crossorigin = attr("crossorigin")
+
   /**
     * This attribute allows the elimination of parser-blocking JavaScript
     * where the browser would have to load and evaluate scripts before continuing to parse. defer has a similar effect in this case.
@@ -1013,7 +1026,6 @@ trait Attrs[Builder, Output <: FragT, FragT] extends InputAttrs[Builder, Output,
     */
   lazy val async = attr("async").empty
 
-
   /**
    * ARIA is a set of special accessibility attributes which can be added
    * to any markup, but is especially suited to HTML. The role attribute