WIP abra app version <app> implementation

config/app.go

@@ -228,6 +228,9 @@ func GetAppStatuses(appFiles AppFiles) (map[string]string, error) {
 	return statuses, nil
 }
 
+// GetAppComposeFiles retrieves a compose specification for a recipe. This
+// specification is the result of a merge of all the compose.**.yml files in
+// the recipe repository.
 func GetAppComposeFiles(recipe string) (*composetypes.Config, error) {
 	pattern := fmt.Sprintf("%s/%s/compose**yml", APPS_DIR, recipe)
 	composeFiles, err := filepath.Glob(pattern)