Update README.md

README.md

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-[![Build Status](https://travis-ci.org/abaker/tasks.png?branch=master)](https://travis-ci.org/abaker/tasks)
-
 Visit the wiki to [get started with development](https://github.com/abaker/tasks/wiki/Getting-Started-with-Development).
 
+[![Build Status](https://travis-ci.org/abaker/tasks.png?branch=master)](https://travis-ci.org/abaker/tasks)
+
 [![Get it on Google Play](https://developer.android.com/images/brand/en_generic_rgb_wo_45.png)](https://play.google.com/store/apps/details?id=org.tasks)
+
+[![Make a contribution](https://pledgie.com/campaigns/24281.png?skin_name=chrome)](https://pledgie.com/campaigns/24281)