Downgrade several dependencies for node v0.1x compatibility (#201)

* Downgrade pretty-bytes to ^3.0.1

* Downgrade gulp-eslint for the same reason

* Restoring the eslint dependencies to their earlier versions

package.json

@@ -1,6 +1,6 @@
 {
   "name": "sw-precache",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "description": "Generates a service worker to cache your local App Shell resources.",
   "author": {
     "name": "Jeff Posnick",
@@ -23,14 +23,14 @@
   },
   "devDependencies": {
     "del": "^2.2.2",
-    "eslint": "^3.8.1",
-    "eslint-config-google": "^0.6.0",
+    "eslint": "^1.10.3",
+    "eslint-config-google": "^0.3.0",
     "express": "^4.14.0",
     "gh-pages": "^0.11.0",
     "grunt": "^1.0.1",
     "gulp": "^3.9.1",
     "gulp-doctoc": "^0.1.4",
-    "gulp-eslint": "^3.0.1",
+    "gulp-eslint": "^1.0.0",
     "gulp-load-plugins": "^1.3.0",
     "gulp-mocha": "^3.0.1",
     "gulp-replace": "^0.5.4",
@@ -47,7 +47,7 @@
     "lodash.template": "^4.4.0",
     "meow": "^3.7.0",
     "mkdirp": "^0.5.1",
-    "pretty-bytes": "^4.0.2",
+    "pretty-bytes": "^3.0.1",
     "sw-toolbox": "^3.4.0"
   },
   "repository": "googlechrome/sw-precache",