include node-sass in npm deps

package-lock.json

@@ -1528,9 +1528,9 @@
       },
       "dependencies": {
         "lru-cache": {
-          "version": "4.1.2",
-          "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-4.1.2.tgz",
-          "integrity": "sha512-wgeVXhrDwAWnIF/yZARsFnMBtdFXOg1b8RIrhilp+0iDYN4mdQcNZElDZ0e4B64BhaxeQ5zN7PMyvu7we1kPeQ==",
+          "version": "4.1.3",
+          "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-4.1.3.tgz",
+          "integrity": "sha512-fFEhvcgzuIoJVUF8fYr5KR0YqxD238zgObTps31YdADwPPAp82a4M8TrckkWyx7ekNlf9aBcVn81cFwwXngrJA==",
           "dev": true,
           "requires": {
             "pseudomap": "^1.0.2",
@@ -3135,9 +3135,9 @@
       "dev": true
     },
     "js-base64": {
-      "version": "2.4.3",
-      "resolved": "https://registry.npmjs.org/js-base64/-/js-base64-2.4.3.tgz",
-      "integrity": "sha512-H7ErYLM34CvDMto3GbD6xD0JLUGYXR3QTcH6B/tr4Hi/QpSThnCsIp+Sy5FRTw3B0d6py4HcNkW7nO/wdtGWEw==",
+      "version": "2.4.5",
+      "resolved": "https://registry.npmjs.org/js-base64/-/js-base64-2.4.5.tgz",
+      "integrity": "sha512-aUnNwqMOXw3yvErjMPSQu6qIIzUmT1e5KcU1OZxRDU1g/am6mzBvcrmLAYwzmB59BHPrh5/tKaiF4OPhqRWESQ==",
       "dev": true
     },
     "js-tokens": {
@@ -3848,9 +3848,9 @@
       }
     },
     "node-sass": {
-      "version": "4.8.3",
-      "resolved": "https://registry.npmjs.org/node-sass/-/node-sass-4.8.3.tgz",
-      "integrity": "sha512-tfFWhUsCk/Y19zarDcPo5xpj+IW3qCfOjVdHtYeG6S1CKbQOh1zqylnQK6cV3z9k80yxAnFX9Y+a9+XysDhhfg==",
+      "version": "4.9.0",
+      "resolved": "https://registry.npmjs.org/node-sass/-/node-sass-4.9.0.tgz",
+      "integrity": "sha512-QFHfrZl6lqRU3csypwviz2XLgGNOoWQbo2GOvtsfQqOfL4cy1BtWnhx/XUeAO9LT3ahBzSRXcEO6DdvAH9DzSg==",
       "dev": true,
       "requires": {
         "async-foreach": "^0.1.3",
@@ -5100,9 +5100,9 @@
       }
     },
     "stringstream": {
-      "version": "0.0.5",
-      "resolved": "https://registry.npmjs.org/stringstream/-/stringstream-0.0.5.tgz",
-      "integrity": "sha1-TkhM1N5aC7vuGORjB3EKioFiGHg=",
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/stringstream/-/stringstream-0.0.6.tgz",
+      "integrity": "sha512-87GEBAkegbBcweToUrdzf3eLhWNg06FJTebl4BVJz/JgWy8CvEr9dRtX5qWphiynMSQlxxi+QqN0z5T32SLlhA==",
       "dev": true
     },
     "strip-ansi": {

package.json

@@ -16,6 +16,7 @@
     "gulp-rename": "^1.2.2",
     "gulp-sass": "^4.0.1",
     "gulp-util": "^3.0.7",
+    "node-sass": "^4.9.0",
     "vinyl-buffer": "^1.0.0",
     "vinyl-source-stream": "^2.0.0"
   },