Refactor + tests (#6)

- Minor codebase clean-up
- Slight reorganisation of examples + tests so that we don't break stuff by accident
- CI tests

reactics-bdd/test.drs

@@ -0,0 +1,19 @@
+#
+# Coffee machine RS
+#
+
+reactions {
+
+    { { a; },{ z; } -> { b; } };
+    #{ { c; },{ z; } -> { d; } };
+
+}
+
+action-atoms { z; }
+initial-state { a; } 
+ctl-property { EF ( coffee_ready ) }
+#ctl-property { AG( coffee_ready IMPLIES ~water_ready ) }
+#ctl-property { AG( failure IMPLIES AX ~busy ) }
+#ctl-property { EG ( EF coffee_ready ) }
+
+