EXHIBIT 4.2 SECOND AMENDMENT TO REVOLVING CREDIT NOTE

August 4, 2014 (the “Effective Date”)

Amendment. By this Second Amendment to Revolving Credit Note (the “Amendment”), the Note hereby is amended as follows:

At the request of Borrower, Lender has agreed to increase the principal amount of the Note from $5,000,000 to $10,000,000. Accordingly, all references in the Note to $5,000,000 are changed to $10,000,000. The term “Available Amount” as defined in the Note shall mean $10,000,000.

The Unused Facility Fee required to be paid by Borrower to Lender is amended to be equal to twenty five basis points (25 bps) (0.25%) per annum, calculated quarterly by multiplying 0.0625% by and amount equal to (a) $10,000,000 less (b) the average daily aggregate unpaid balance on the Revolving Credit Note during the fiscal quarter immediately proceeding the Unused Facility Fee due date. Such fee shall be fully earned when paid and shall not be refunded for any reason. In the event the Revolving Credit Loan Maturity Date is not on the last day of a fiscal quarter, the Unused Facility Fee for the last fiscal quarter shall be due and payable on the fifth day after the Revolving Credit Loan Maturity Date and shall be equal to twenty five basis points (25 bps) (0.25%) per annum, calculated quarterly by multiplying 0.0625% by and amount equal to (a) $10,000,000 less (b) the average daily aggregate unpaid balance on the Revolving Credit Note during the period commencing on the first day of such fiscal quarter and ending on the Revolving Credit Loan Maturity Date.

Capitalized terms used herein and not otherwise defined will be given the definitions set forth in the Loan Agreement and the Note.

Borrower represents and warrants that Borrower has no claims, counterclaims, setoffs, actions or causes of actions, damages or liabilities of any kind or nature whatsoever whether at law or in equity, in contract or in tort, whether now accrued or hereafter maturing (collectively, “Claims”) against Lender, its direct or indirect parent corporation or any direct or indirect affiliates of such parent corporation, or any of the foregoing’s respective directors, officers, employees, agents, attorneys and legal representatives, or the heirs, administrators, successors or assigns of any of them (collectively, “Lender Parties”) that directly or indirectly arise out of, are based upon or are in any manner connected with any Prior Related Event. As an inducement to Lender to enter into this Amendment, Borrower on behalf of itself, and all of its successors and assigns hereby knowingly and voluntarily releases and discharges all Lender Parties from any and all Claims, whether known or unknown, that directly or indirectly arise out of, are based upon or are in any manner connected with any Prior Related Event. As used herein, the term “Prior Related Event” means any transaction, event, circumstance, action, failure to act, occurrence of any sort or type, whether known or unknown, which occurred, existed, was taken, permitted or begun at any time prior to the Effective Date (as defined above) or occurred, existed, was taken, was permitted or begun in accordance with, pursuant to or by virtue of any of the terms of the Note, the Loan Agreement or any documents executed in connection with the Note or the Loan Agreement or which was related to or connected in any manner, directly or indirectly to the extension of credit represented by the Note or the Loan Agreement.

Except as amended hereby, the Note shall remain in full force and effect and is hereby ratified and confirmed as the obligations of Borrower. Nothing contained herein shall affect or impair any rights, remedies, or powers

Nothing contained herein nor any prior written or oral representations by Lender shall be construed as obligating Lender to grant any further increases to the principal amount of the Note.

Borrower agrees to execute and deliver, or cause to be executed and delivered, any other documents or instruments deemed necessary by Lender to perfect or continue the perfection of any security interest.

Borrower reaffirms the waiver of jury trial provision contained the Note.