Add option to send one file per request (#59)

* style: format code

* feat: add option to send one file per request

* feat: add exported interfaces for ReplaceTexts and AngularFileUploaderConfig to document input config, also add types to some properties

* fix: remove npm dir

* fix: remove unused afu-lab

* feat: use AngularFileUploaderConfig in demo app

* fix: remove unused code in demo app and rename a demo app method

Author: AndersTornkvist

.gitignore

@@ -37,3 +37,6 @@ testem.log
 # System Files
 .DS_Store
 Thumbs.db
+
+# npm dir
+/npm/