EX-2 3 t83108_ex2.htm EXHIBIT 2

 

 

EXHIBIT 2

 

JOINT FILING AGREEMENT

 

The undersigned hereby agree to the joint filing of the Schedule 13D to which this Agreement is attached.

 

Dated:  September 4, 2015 

   
  DISCOVERY GROUP I, LLC,
  for itself and as general partner of
  DISCOVERY EQUITY PARTNERS, L.P.
     
     
  By Michael R. Murphy*
    Michael R. Murphy
    Managing Member

  

  Daniel J. Donoghue*
  Daniel J. Donoghue
   
   
  Michael R. Murphy* 
  Michael R. Murphy
     

  *By:  /s/ Mark Buckley
    Mark Buckley
    Attorney-in-Fact for Daniel J. Donoghue
    Attorney-in-Fact for Michael R. Murphy