update npmignore

.npmignore

 # gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
 
 ## Build generated
-ios/build/
-ios/DerivedData/
+lib/ios/build/
+lib/ios/DerivedData/
 
 ## Various settings
 *.pbxuser
 !default.mode2v3
 *.perspectivev3
 !default.perspectivev3
-ios/xcuserdata/
+lib/ios/xcuserdata/
 
 ## Other
 *.moved-aside
 # you should judge for yourself, the pros and cons are mentioned at:
 # https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
 #
-ios/Pods/
+lib/ios/Pods/
 
 # Carthage
 #
 *.class
 
 # Generated files
-android/bin/
-android/gen/
-android/out/
+lib/android/bin/
+lib/android/gen/
+lib/android/out/
 
 # Gradle files
-android/.gradle/
-android/build/
+lib/android/.gradle/
+lib/android/build/
 
 # Local configuration file (sdk path, etc)
 local.properties
 
 # Proguard folder generated by Eclipse
-android/proguard/
+lib/android/proguard/
 
 # Log Files
 *.log
 
 # Android Studio Navigation editor temp files
-android/.navigation/
+lib/android/.navigation/
 
 # Android Studio captures folder
-android/captures/
+lib/android/captures/
 
 # Intellij
 *.iml
 # BUCK
 buck-out/
 \.buckd/
-android/app/libs
-android/keystores/debug.keystore
+lib/android/app/libs
+lib/android/keystores/debug.keystore