Added readme for filetransfer upload example
Added readme for filetransfer upload example

dtaalbers/ionic-example-app,dtaalbers/ionic-2-examples,dtaalbers/ionic-2-examples,dtaalbers/ionic-example-app,dtaalbers/FileTransferExample,dtaalbers/FileTransferExample,dtaalbers/ionic-example-app,dtaalbers/FileTransferExample,dtaalbers/ionic-example-app,dtaalbers/ionic-2-examples