Move preinstall to prepublish & v0.0.8

Author: jhen0409

.npmignore

@@ -1,12 +1,16 @@
 {
   "name": "react-native-s3",
-  "version": "0.0.7",
+  "version": "0.0.8",
   "description": "A React Native wrapper for AWS S3 SDK",
   "main": "./src/index.js",
+  "files": [
+    "android/",
+    "ios/",
+    "src/"
+  ],
   "scripts": {
     "lint": "eslint src/*.js example/*.js",
-    "preinstall": "./scripts/download-ios.sh 2.4.1",
-    "prepublish": "rm -rf ./ios/RNS3.xcodeproj/xcuserdata ./ios/RNS3.xcodeproj/project.xcworkspace"
+    "prepublish": "./scripts/download-ios.sh 2.4.1 && rm -rf ./ios/RNS3.xcodeproj/xcuserdata ./ios/RNS3.xcodeproj/project.xcworkspace"
   },
   "repository": {
     "type": "git",