Adding scrutinizer and travis status labels

Author: DeepDiver1975

README.md

@@ -3,6 +3,10 @@ files_pdfviewer
 
 This application integrates the [PDF.js](https://mozilla.github.io/pdf.js/) library into ownCloud. Using this application users can view their PDF files online without downloading the file.
 
+[![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/owncloud/files_pdfviewer/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/owncloud/files_pdfviewer/?branch=master)
+[![Code Coverage](https://scrutinizer-ci.com/g/owncloud/files_pdfviewer/badges/coverage.png?b=master)](https://scrutinizer-ci.com/g/owncloud/files_pdfviewer/?branch=master)
+[![Build Status](https://travis-ci.org/owncloud/files_pdfviewer.svg)](https://travis-ci.org/owncloud/files_pdfviewer)
+
 Maintainers
 ===========
 - [Lukas Reschke](https://github.com/LukasReschke)