Statement of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net loss	$ (20,119,498)	$ (9,038,388)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	1,566,562	1,030,215
Warrant remeasurement	1,879,823	(183,817)
Depreciation expense	38,360	23,474
Amortization of debt discount	79,400	8,822
Non-cash interest expense	28,667	1,596
Changes in assets and liabilities:
Other receivable	0	459,018
Prepaid expenses and other assets	78,814	170,315
Accounts payable	(126,415)	704,471
Accrued expenses	1,604,432	(6,361)
Net cash used in operating activities	(14,969,855)	(6,830,655)
Cash flows from investing activities:
Purchases of property and equipment	(799,424)	(265,150)
Net cash used in investing activities	(799,424)	(265,150)
Cash flows from financing activities:
Proceeds from issuance of debt	3,000,000	3,000,000
Payments for deferred issuance costs	(474,357)	(796,791)
Payments for debt issuance costs	0	(159,136)
Proceeds from issuance of preferred stock, net of issuance costs	52,394,571	0
Net cash provided by financing activities	54,920,214	2,044,073
Net increase (decrease) in cash	39,150,935	(5,051,732)
Cash and cash equivalents at beginning of period	13,728,972	7,858,169
Cash and cash equivalents at end of period	52,879,907	2,806,437
Cash paid for:
Interest	412,717	0
Supplemental cash flow information:
Deferred issuance costs included in accrued expenses and accounts payable	552,410	768,300
Non-cash financing costs	175,114	0
Accrued capital expenditures included in accrued expenses	$ 576,839	$ 365,981