Merge pull request #1487 from somethingkindawierd/master

Adds svg mask and pattern dom components

src/browser/ReactDOM.js

@@ -177,7 +177,9 @@ var ReactDOM = mapObject({
   g: false,
   line: false,
   linearGradient: false,
+  mask: false,
   path: false,
+  pattern: false,
   polygon: false,
   polyline: false,
   radialGradient: false,

vendor/fbtransform/transforms/xjs.js

@@ -92,6 +92,7 @@ var knownTags = {
   map: true,
   mark: true,
   marquee: true,
+  mask: false,
   menu: true,
   menuitem: true,
   meta: true,
@@ -106,6 +107,7 @@ var knownTags = {
   p: true,
   param: true,
   path: true,
+  pattern: false,
   polygon: true,
   polyline: true,
   pre: true,