hook_install
function hook_install
hook_install()
Perform setup tasks when the module is installed.
If the module implements hook_schema(), the database tables will be created before this hook is fired.
Implementations of this hook are by convention declared in the module's .install file. The implementation can rely on the .module file being loaded. The hook will only be called the first time a module is enabled or after it is re-enabled after being uninstalled. The module's schema version will be set to the module's greatest numbered update hook. Because of this, any time a hook_update_N() is added to the module, this func