Exhibit I

AGREEMENT REGARDING

THE JOINT FILING OF SCHEDULE 13D

The undersigned hereby agree as follows:

(i) Each of them is individually eligible to use the Schedule 13D to which this Exhibit is attached, and such Schedule 13D is filed on behalf of each of them; and

(ii) Each of them is responsible for the timely filing of such Schedule 13D and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained therein; but none of them is responsible for the completeness or accuracy of the information concerning the other persons making the filing, unless such person knows or has reason to believe that such information is inaccurate.

Dated: July 6, 2015

Marc Stad
By:	/s/ Marc Stad
DRAGONEER INVESTMENT GROUP, LLC
By:	/s/ Pat Robertson
Name:	Pat Robertson
	Chief Operating Officer
DRAGONEER APARTMENT, LLC
By:	Dragoneer Global GP, LLC
Its:	Manager
By:	/s/ Pat Robertson
Name:	Pat Robertson
DRAGONEER GLOBAL FUND II, L.P.
By:	Dragoneer Global GP II, LLC
Its:	General Partner
By:	/s/ Pat Robertson
Name:	Pat Robertson