[skip travis] revert latest AppVeyor changes, getting a lot of npm 304s

appveyor.yml

@@ -16,10 +16,10 @@ environment:
     - nodejs_version: 0.12.7
       platform: x64
       msvs_toolset: 12
-    - nodejs_version: 4.4.1
+    - nodejs_version: 4.0.0
       platform: x64
       msvs_toolset: 12
-    - nodejs_version: 4.4.1
+    - nodejs_version: 4.0.0
       platform: x86
       msvs_toolset: 12
     - nodejs_version: 5.0.0
@@ -45,14 +45,6 @@ environment:
       platform: x64
       msvs_toolset: 14
       TOOLSET_ARGS: --dist-url=https://s3.amazonaws.com/mapbox/node-cpp11 --toolset=v140
-    - nodejs_version: 4.4.1
-      platform: x86
-      msvs_toolset: 14
-      TOOLSET_ARGS: --dist-url=https://s3.amazonaws.com/mapbox/node-cpp11 --toolset=v140
-    - nodejs_version: 4.4.1
-      platform: x64
-      msvs_toolset: 14
-      TOOLSET_ARGS: --dist-url=https://s3.amazonaws.com/mapbox/node-cpp11 --toolset=v140
 
 os: Visual Studio 2015
 

package.json

@@ -38,7 +38,7 @@
     },
     "dependencies": {
         "nan": "~2.2.0",
-        "node-pre-gyp": "https://github.com/mapbox/node-pre-gyp/tarball/v0.7.x"
+        "node-pre-gyp": "~0.6.25"
     },
     "bundledDependencies": [
         "node-pre-gyp"
@@ -49,7 +49,6 @@
     },
     "scripts": {
         "prepublish":"npm ls",
-        "preinstall": "npm install node-pre-gyp",
         "install": "node-pre-gyp install --fallback-to-build",
         "pretest": "node test/support/createdb.js",
         "test": "mocha -R spec --timeout 480000"