Statements of Cash Flows - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities
Net loss	$ (26,436,250)	$ (9,232,470)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	14,300	7,730
Noncash stock bonus		80,000
Noncash stock based compensation	2,129,172	973,354
Noncash interest	417,501	138,723
Loss on extinguishment of debt	1,035,981
Change in fair value of warrants	(44,801)	(278,564)
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(530,543)	(2,900,224)
Accounts payable and accrued expenses	3,004,762	2,220,392
Net cash used in operating activities	(20,409,878)	(8,991,059)
Cash flows from investing activities
Acquisition of property and equipment	(288,398)	(42,348)
Net cash used in investing activities	(288,398)	(42,348)
Cash flows from financing activities
Proceeds from issuance of long-term debt	16,265,000
Repayment of long-term debt	(15,784,150)
Proceeds from convertible bridge notes		3,000,000
Cash paid for debt financing costs	(423,256)	(150,000)
Proceeds from the issuance of common stock, net	19,330,613	49,743,641
Proceeds from exercise of stock options	532,241
Net cash provided by financing activities	19,920,448	52,593,641
Net (decrease) increase in cash and cash equivalents	(777,828)	43,560,234
Cash and cash equivalents, beginning of period	40,182,141	2,119,646
Cash and cash equivalents, end of period	39,404,313	45,679,880
Supplemental disclosure of noncash financing activities
Fair value of common stock warrants issued	1,184,228
Conversion of preferred stock into common stock		69,232,677
Conversion of notes payable and interest into common stock		3,020,667
Supplemental cash flow information
Interest paid	$ 1,098,261	$ 1,035,000