The special function `git_revision` will use the prefix of the hash of the latest git commit.
By default, the version is 0.1.
+* `app_files` tells the compiler where to find platform specific resource files associated to a module.
+ By default, only the root of the project is searched for the folders `android` and `ios`.
+ The `android` folder is used as base for the generated Android project,
+ it can be used to specify the resource files, libs and even Java source files.
+ The `ios` folder is searched for icons only.
+
+ Each argument of `app_files` is a relative path to a folder containing extra `android` or `ios` folders.
+ If there is no arguments, the parent folder of the annotated module is used.
+ In case of name conflicts in the resource files, the files from the project root have the lowest priority,
+ those associated to modules lower in the importation hierarchy have higher priority.
+
## Usage Example
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