Merge pull request #341 from jaakkor2/patch-1

Add capacitor initial voltage to README.md example

Author: ChrisRackauckas

README.md

@@ -48,14 +48,14 @@ The following is the [RC Circuit Demonstration](https://docs.sciml.ai/ModelingTo
 using ModelingToolkit, OrdinaryDiffEq, Plots
 using ModelingToolkitStandardLibrary.Electrical
 using ModelingToolkitStandardLibrary.Blocks: Constant
+using ModelingToolkit: t_nounits as t
 
 R = 1.0
 C = 1.0
 V = 1.0
-@variables t
 systems = @named begin
     resistor = Resistor(R = R)
-    capacitor = Capacitor(C = C)
+    capacitor = Capacitor(C = C, v = 0.0)
     source = Voltage()
     constant = Constant(k = V)
     ground = Ground()