Statements of Cash Flows (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities
Net loss	$ (9,232,470)	$ (11,907,064)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	7,730	9,149
Noncash stock bonus	80,000	79,509
Noncash stock based compensation	973,354	1,095,452
Noncash interest	138,723	69,246
Change in fair value of warrants	(278,564)	(24,856)
Changes in operating assets and liabilities:
Prepaid expenses	(2,900,224)	41,672
Accounts payable and accrued expenses	2,220,392	(540,063)
Net cash (used in) operating activities	(8,991,059)	(11,176,955)
Cash flows from investing activities
Acquisition of property and equipment	(42,348)	(4,892,281)
Net cash used in investing activities	(42,348)	(4,892,281)
Cash flows from financing activities
Proceeds from convertible bridge notes	3,000,000
Cash paid for financing costs	(150,000)
Proceeds from issuance of common stock in initial public offering, net of offering costs	49,743,641
Net cash provided by financing activities	52,593,641
Net increase (decrease) in cash and cash equivalents	43,560,234	(16,069,236)
Cash and cash equivalents, beginning of period	2,119,646	20,013,754
Cash and cash equivalents, end of period	45,679,880	3,944,518
Supplemental cash flow information
Interest paid	1,035,000	1,035,000
Supplemental disclosure of noncash financing activities
Conversion of preferred stock into common stock	69,232,677
Conversion of notes payable and interest into common stock	$ 3,020,667