Task3_Score UI and system

1. Introduction

One of the winning condition of the game. 

I will build a point or score system to increase my game contents.

2. Goals to achieve

- Update score number on UI

- Destroy Object after collision

- Some of the coins worth more

3. Problems

I was kind of tricky to set a Random.Range for the amount of coins the player will receive.

Solved this problem by setting range 1 ~ 11. 

I have implemented rest of function for SGD240