Update 'README.md'

README.md

@@ -3,13 +3,16 @@ ResistorJS is a Javascript library intended to compose electronical resistors.
 
 ## Using Resistors in Code
 In order to instantiate an 100 Ohm resistor, we simply call `new Resistor(100)`. In order to compose several resistors, the composite resistor types `SeriesResistor` and `ParallelResistor` are available.
-```
+```JS
 var r1 = new Resistor(100);
 var r2 = new Resistor(150);
 // Combining resistors
 var inSeries = r1.series(r2); // type: SeriesResistor
 var inParallel = r1.parallel(r2); // type: ParallelResistor
 
+inSeries.getOhmage() // 250
+inParallel.getOhmage() // 60
+
 // Drawing to DOM
 r1.draw(div1);
 r2.draw(div2);