Upgrades to windshaft 0.37.4

NEWS.md

@@ -1,6 +1,9 @@
 1.28.4 -- 2015-mm-dd
 --------------------
 
+Announcements:
+- Upgrades windshaft to [0.37.4](https://github.com/CartoDB/Windshaft/releases/tag/0.37.4)
+
 
 1.28.3 -- 2015-02-17
 --------------------

npm-shrinkwrap.json

@@ -181,8 +181,8 @@
       "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.6.0.tgz"
     },
     "windshaft": {
-      "version": "0.37.3",
-      "from": "windshaft@~0.37.3",
+      "version": "0.37.4",
+      "from": "windshaft@~0.37.4",
       "dependencies": {
         "chronograph": {
           "version": "0.1.0",

package.json

@@ -25,7 +25,7 @@
         "node-varnish": "https://github.com/Vizzuality/node-varnish/tarball/0.3.0",
         "underscore"  : "~1.6.0",
         "dot": "~1.0.2",
-        "windshaft": "~0.37.3",
+        "windshaft": "~0.37.4",
         "step": "~0.0.5",
         "queue-async": "~1.0.7",
         "request": "~2.9.203",