Update npm dependencies

Author: ai

package.json

@@ -13,7 +13,7 @@
         "coffee-script": "1.9.2",
         "browserslist":  "~0.4.0",
         "num2fraction":  "^1.1.0",
-        "caniuse-db":    "^1.0.30000172",
+        "caniuse-db":    "^1.0.30000181",
         "postcss":       "~4.1.11"
     },
     "devDependencies": {
@@ -22,9 +22,9 @@
         "gulp-replace":        "0.5.3",
         "gulp-eslint":         "0.12.0",
         "gulp-coffee":         "2.3.1",
-        "gulp-mocha":          "2.0.1",
+        "gulp-mocha":          "2.1.0",
         "browserify":          "10.2.1",
-        "fs-extra":            "0.18.3",
+        "fs-extra":            "0.18.4",
         "should":              "6.0.3",
         "mocha":               "2.2.5",
         "gulp":                "3.8.11"