Change README to use master branch.

README.md

-[![pipeline status](/../badges/dev/pipeline.svg)](/../pipelines)
-[![pipeline status](/../badges/dev/coverage.svg)](/../pipelines)
+[![pipeline status](/../badges/master/pipeline.svg)](/../pipelines)
+[![pipeline status](/../badges/master/coverage.svg)](/../pipelines)
 
 # ERASER - OpenLicht Knowledge Base
 
@@ -8,7 +8,7 @@
 There are a few subprojects in this repository:
 
 - Base
-	- **eraser-base**: The core part of the framework containing the [grammar](/../blob/dev/eraser-base/src/main/jastadd/main.relast), various attributes, the [parser](/../blob/dev/eraser-base/src/main/jastadd/eraser.parser) for model specification files, and Java classes for the [openHAB communication](/../tree/dev/eraser-base/src/main/java/de/tudresden/inf/st/eraser/openhab2) via [MQTT](/../blob/dev/eraser-base/src/main/java/de/tudresden/inf/st/eraser/openhab2/mqtt/MQTTUpdater.java)
+	- **eraser-base**: The core part of the framework containing the [grammar](/../blob/master/eraser-base/src/main/jastadd/main.relast), various attributes, the [parser](/../blob/master/eraser-base/src/main/jastadd/eraser.parser) for model specification files, and Java classes for the [openHAB communication](/../tree/master/eraser-base/src/main/java/de/tudresden/inf/st/eraser/openhab2) via [MQTT](/../blob/master/eraser-base/src/main/java/de/tudresden/inf/st/eraser/openhab2/mqtt/MQTTUpdater.java)
 - Utility
 	- **commons.color**: Utilities for converting color spaces (XYZ, RGB, HSB)
 	- **project-template**: Template to quickly create new subprojects used by `make-new-project.py`