add extra files

ruby/vehicle_methods.rb

@@ -0,0 +1,29 @@
+def accelerate
+    puts "Stepping on the gas"
+    puts "Speeding up"
+end
+
+def sound_horn
+    puts "Pressing the horn button"
+    puts "Beep beep!"
+end
+
+def use_headlights(brightness)
+    puts "Turning on #{brightness} headlights"
+    puts "Watch out for deer!"
+end
+
+def use_headlights(brightness = "low-beam")
+    puts "Turning on #{brightness} headlights"
+    puts "Watch out for deer!"
+end
+
+def mileage(miles_driven, gas_used)
+    return miles_driven / gas_used
+end
+
+trip_mileage = mileage(400, 12)
+puts "You got #{trip_mileage} MPG on this trip."
+
+lifetime_mileage = mileage(11432, 366)
+puts "This car averages #{lifetime_mileage} MPG."