step-03 solution - mobius client common method
step-03 solution - refactor
Merge branch 'step-04' into step-04b

Conflicts:
	src/main/java/pl/allegro/atm/workshop/rx/mobius/MobiusClient.java
step-04b solution - refactor
Merge branch 'step-04b' into step-05

Conflicts:
	src/main/java/pl/allegro/atm/workshop/rx/mobius/MobiusClient.java
step-05 solution - refactor