Remove glfmGetUserInterfaceIdiom
* iOS 8 recommends size classes instead
* Doesn't make much sense on Android or Emscripten
iOS: Code style cleanup, add cleanup on dealloc
Code style change for NULL checks
Add GLFMAssetSeek enum
glfm_main -> glfmMain
Update readme
Package name changes for the project creation script:
* Uses dashes instead of underscores for the package name on iOS
* Use the current username for the default package name