EXHIBIT 99.1
 

EXHIBIT 1

to SCHEDULE 13D

JOINT ACQUISITION STATEMENT

PURSUANT TO RULE 13D-1(k)(1)

The undersigned acknowledge and agree that the foregoing statement on Schedule 13D is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13D shall be filed on behalf of each of the undersigned without the necessity of filing additional joint acquisition statements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him, her or it contained herein, but shall not be responsible for the completeness  and accuracy of the information concerning the other entities or persons, except to the extent that he, she or it knows or has reason to believe that such information is accurate.

Dated:  November 10, 2011

GENERAL ATLANTIC LLC
By:	/s/ Matthew  Nimetz
	Name:  Matthew Nimetz
	Title: Managing Director
GENERAL ATLANTIC PARTNERS 80, L.P.
By:	General Atlantic LLC, its general partner
By:	/s/ Matthew Nimetz
	Name:  Matthew Nimetz
	Title: Managing Director

GENERAL ATLANTIC PARTNERS 82, L.P.
By:	General Atlantic LLC, its general partner
By:	/s/ Matthew Nimetz
	Name:  Matthew Nimetz
	Title: Managing Director

GAP COINVESTMENTS III, LLC
By:	/s/ Matthew Nimetz
	Name:  Matthew Nimetz
	Title: Managing Member
GAP COINVESTMENTS IV, LLC
By:	/s/ Matthew Nimetz
	Name:  Matthew Nimetz
	Title: Managing Member
GAPSTAR, LLC
By:	/s/ Matthew Nimetz
	Name:  Matthew Nimetz
	Title: Vice President
GAPCO GMBH & CO. KG
By:	GAPCO Management GmbH, its general partner
By	/s/ Matthew Nimetz
	Name:  Matthew Nimetz
	Title: Managing Director

GAPCO MANAGEMENT GMBH
By:	/s/ Matthew Nimetz
	Name:  Matthew Nimetz
	Title: Managing Director
GAP COINVESTMENTS CDA, L.P.
By:	General Atlantic LLC, its general partner
By:	/s/ Matthew Nimetz
	Name:  Matthew Nimetz
	Title: Managing Director