Updated code markup before start of the hackaton
Updated styling of tests and extracted classes in ReactiveSerialReader,
which is now a factory returing Observables
Merge branch 'develop' of https://github.com/anandsaw/Reactive-AirQuality into develop

Conflicts:
	Reactive-AirQuality/target/classes/META-INF/maven/nl.tudelt.in4389/Reactive-AirQuality/pom.properties
	Reactive-AirQuality/target/test-classes/nl/tudelt/in4389/Reactive_AirQuality/AppTest.class