update travis, dependencies, and readme

package.json

@@ -14,7 +14,7 @@
   ],
   "main": "lib/index",
   "scripts": {
-    "test": "tape test",
+    "test": "tape test --tap | tap-difflet",
     "lint": "grunt lint",
     "test:browser": "prova -b"
   },
@@ -55,23 +55,25 @@
     ]
   },
   "dependencies": {
-    "mime-types": "^2.0.3",
+    "grunt-cli": "^0.1.13",
+    "mime-types": "^2.1.7",
     "xml": "^1.0.0"
   },
   "devDependencies": {
-    "folderify": "^0.6.0",
+    "folderify": "^1.1.0",
     "grunt": "^0.4.5",
-    "grunt-contrib-jshint": "^0.11.0",
-    "grunt-release": "^0.11.0",
-    "grunt-templates-dylang": "^1.0.0",
-    "include-folder": "^0.7.0",
-    "load-grunt-tasks": "^3.1.0",
-    "mockdate": "^1.0.1",
-    "prova": "^2.0.3",
-    "q": "^1.0.0",
-    "tape": "^3.0.3",
-    "time-grunt": "^1.0.0",
-    "xml2js": "^0.4.1"
+    "grunt-contrib-jshint": "^0.11.3",
+    "grunt-release": "^0.13.0",
+    "grunt-templates-dylang": "^1.0.10",
+    "include-folder": "^1.0.0",
+    "load-grunt-tasks": "^3.3.0",
+    "mockdate": "^1.0.3",
+    "prova": "^2.1.2",
+    "q": "^1.4.1",
+    "tap-difflet": "^0.4.0",
+    "tape": "^4.2.1",
+    "time-grunt": "^1.2.1",
+    "xml2js": "^0.4.12"
   },
   "browserify": {
     "transform": [