Exhibit 99.1

JOINT FILING AGREEMENT

The undersigned, being duly authorized thereunto, hereby execute this agreement as an exhibit to this Schedule 13D to evidence the agreement of the below-named parties, in accordance with the rules promulgated pursuant to the Securities Exchange Act of 1934, as amended, to file this Schedule 13D jointly on behalf of each such party.

Dated:  January 2, 2018

		/s/ Aziz Hashim
		Aziz Hashim
RTI HOLDING COMPANY, LLC
By: NRD Capital Management II, LLC, its sole manager
	By:	/s/ Aziz Hashim
		Name: Aziz Hashim
		Title: Managing Member
RTI INVESTMENT COMPANY, LLC
By: NRD Capital Management II, LLC, its sole manager
	By:	/s/ Aziz Hashim
		Name: Aziz Hashim
		Title: Managing Member
NRD PARTNERS II, L.P.
By: NRD Partners II GP, LLC, its general partner
	By:	/s/ Aziz Hashim
		Name: Aziz Hashim
		Title: Managing Member
NRD PARTNERS II GP, LLC
	By:	/s/ Aziz Hashim
		Name: Aziz Hashim
		Title: Managing Member