remove node-gyp from package.json since it will now break node v0.10.x support

package.json

@@ -38,13 +38,12 @@
   },
   "dependencies": {
     "nan": "~2.7.0",
-    "node-pre-gyp": "https://github.com/mapbox/node-pre-gyp/tarball/node-v0.10"
+    "node-pre-gyp": "https://github.com/mapbox/node-pre-gyp/tarball/master"
   },
   "bundledDependencies": [
     "node-pre-gyp"
   ],
   "devDependencies": {
-    "node-gyp": "^3.6.1",
     "aws-sdk": "2.x",
     "eslint": "3.5.0",
     "mocha": "3.x"

scripts/build-appveyor.bat

@@ -110,8 +110,9 @@ IF /I "%NPM_BIN_DIR%"=="%CD%" ECHO ERROR npm bin -g equals local directory && SE
 ECHO ===== where npm puts stuff END ============
 
 
-ECHO installing node-gyp
-CALL npm install -g node-gyp
+IF "%nodejs_version:~0,1%"=="0" npm install https://github.com/springmeyer/node-gyp/tarball/v3.x
+IF %ERRORLEVEL% NEQ 0 GOTO ERROR
+IF "%nodejs_version:~0,1%"=="4" npm install node-gyp@4.x
 IF %ERRORLEVEL% NEQ 0 GOTO ERROR
 
 CALL npm install --build-from-source --msvs_version=%msvs_version% %TOOLSET_ARGS% --loglevel=http