Customized Multi EMA

Plot several EMA with only one script.
Default EMA: 20、50、100、200.
All of these are adjustable.
Also, Vegas tunnel and filter line can be presented or not according to your needs.

版本注释:

• Plot several SMA, EMA and Vegas.
  
• Default MA : EMA
  
• SMA, EMA and Vegas could be set separately to show or not according to your needs.
  
• Default length: 20, 50, 100, 200.
  
• All of length are adjustable.
  
• Text and line colors could be set at the same time.
  

版本注释:

• Add deduct points
  
• Set default of line1 length to 25