Quarterly report pursuant to Section 13 or 15(d)

Revenue - Activity in the deferred revenue account (Details)

v3.10.0.1
Revenue - Activity in the deferred revenue account (Details)
6 Months Ended
Jun. 30, 2018
USD ($)
Balance at December 31, 2017 $ 0
Deferral of revenue 50,070
Recognition of unearned revenue (42,850)
Balance at June 30, 2018 $ 7,220